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edwin240170
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Post subject: Re: Sonopress vs PDO identification, again... Posted: 16 Jan 2020, 20:18 |
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Joined: 19 May 2006, 20:41 Posts: 546 Location: Belgium Has thanked: 13 times Been thanked: 44 times
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No need to take off label from disc, as hereby example of mint mark on PDO disc - I have a number of PDO discs without label from factory they are : X Y YYYYY YYYY X X = letter Y = number Whereby the 1st Y is the side identifier Sonopress : > LaserVision : use smaller label, and you can see a hand written mint mark > LaserDisc : music discs use a very very light yellow plastic (not that yellow as PDO), non music uses a fully transparant plastic whereby for both also a smaller label and a engraved mint mark There are exceptions though ... whereby the label is as big as the PDO label, than it becomes more difficult to see. Like mentioned above, during LaserVision times the edges can tell a story (more rounded for PDO, more sharp for Sonopress)
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PDO.JPG [ 11.3 KiB | Viewed 1680 times ]
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confederate
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Post subject: Re: Sonopress vs PDO identification, again... Posted: 17 Jan 2020, 09:05 |
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Joined: 23 Jun 2013, 02:37 Posts: 726 Location: Germany Has thanked: 117 times Been thanked: 62 times
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Thank you, edwin240710. That was very interesting ! I always knew that these PDO discs had mint marks but that they were hidden under the labels.
Now as I already said before I also have a couple of Asian discs, some Indonesian karaoke discs, for instance, that look very much like PDO UK discs. However one of my discs says Made in Taiwan on the sleeve so I am sure that these discs even though they look like PDO discs were manufactured in Taiwan by some obscure pressing plant. It wouldn't make any sense for an Asian publisher to be ordering discs in the UK and have them shipped all the way to SE Asia. That's why many Asian discs, even several of my Indonesian karaoke discs, were manufactured by Kuraray, for instance.
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edwin240170
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Post subject: Re: Sonopress vs PDO identification, again... Posted: 17 Jan 2020, 13:14 |
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Joined: 19 May 2006, 20:41 Posts: 546 Location: Belgium Has thanked: 13 times Been thanked: 44 times
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Hello Confederate, confederate wrote: look very much like PDO UK discs. However one of my discs says Made in Taiwan on the sleeve so I am sure that these discs even though they look like PDO discs were manufactured in Taiwan by some obscure pressing plant. That must be PRINCO pressing plant - I will check further in my own collection as I got a couple of PRINCO pressed discs myself. Br, Edwin
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confederate
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Post subject: Re: Sonopress vs PDO identification, again... Posted: 17 Jan 2020, 13:41 |
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Joined: 23 Jun 2013, 02:37 Posts: 726 Location: Germany Has thanked: 117 times Been thanked: 62 times
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edwin240170 wrote: Hello Confederate, confederate wrote: look very much like PDO UK discs. However one of my discs says Made in Taiwan on the sleeve so I am sure that these discs even though they look like PDO discs were manufactured in Taiwan by some obscure pressing plant. That must be PRINCO pressing plant - I will check further in my own collection as I got a couple of PRINCO pressed discs myself. Br, Edwin Those PRINCO discs that I have seen look different and have clearly legible mint marks on them, starting with KB... Thank you for your interesting input. Really appreciated.
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muzer
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Post subject: Re: Sonopress vs PDO identification, again... Posted: 17 Jan 2020, 14:55 |
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Joined: 02 Sep 2015, 00:03 Posts: 173 Location: United Kingdom Has thanked: 3 times Been thanked: 24 times
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edwin240170 wrote: No need to take off label from disc, as hereby example of mint mark on PDO disc - I have a number of PDO discs without label from factory they are : X Y YYYYY YYYY X X = letter Y = number Whereby the 1st Y is the side identifier Sonopress : > LaserVision : use smaller label, and you can see a hand written mint mark > LaserDisc : music discs use a very very light yellow plastic (not that yellow as PDO), non music uses a fully transparant plastic whereby for both also a smaller label and a engraved mint mark There are exceptions though ... whereby the label is as big as the PDO label, than it becomes more difficult to see. Like mentioned above, during LaserVision times the edges can tell a story (more rounded for PDO, more sharp for Sonopress) Thanks a lot, very useful! I'd still be interested in seeing a photo of a Sonopress disc's centre (especially an older one).
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je280
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Post subject: Re: Sonopress vs PDO identification, again... Posted: 17 Jan 2020, 15:53 |
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Joined: 13 Sep 2012, 23:14 Posts: 1199 Location: United Kingdom Has thanked: 265 times Been thanked: 259 times
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Thanks to all for the really interesting & helpful input on this so far . Dug out the PDO Great Railways LD & made a start removing the disc label, really good adhesive used on them & not the easiest to get off - tried a bit of iso hoping it would help but still rather stubborn to say the least. So far have found a barcode sticker below the label, printed on very thin paper, with *4BX227* on it. Will get the rest of the label off later & update any other markings. Thanks again guys. Cheers for now. .
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edwin240170
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Post subject: Re: Sonopress vs PDO identification, again... Posted: 22 Jan 2020, 21:01 |
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Joined: 19 May 2006, 20:41 Posts: 546 Location: Belgium Has thanked: 13 times Been thanked: 44 times
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You are right PDO has discs without these dashes, but these are discs before ~april 1982, some of the examples are the very early BBCV discs, however the these are limited (also some of the DiscoVision copy very early UK PAL releases are like this) Also up until ~1984 the discs had the small sticker with barcode under the label, after that they disappeared.
Below the markings for Sonopress (Laservision and Laserdisc) using smaller labels than PDO, but as I highlighted above I also have discs pressed by Sonopress with a larger label, so you dont see the mint markings - one other speciality of Sonopress, I have several single-sided discs, where the blank side is colored blue.
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sp.jpg [ 21.87 KiB | Viewed 1616 times ]
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je280
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Post subject: Re: Sonopress vs PDO identification, again... Posted: 23 Jan 2020, 02:01 |
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Joined: 13 Sep 2012, 23:14 Posts: 1199 Location: United Kingdom Has thanked: 265 times Been thanked: 259 times
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edwin240170 wrote: You are right PDO has discs without these dashes, but these are discs before ~april 1982, some of the examples are the very early BBCV discs, however the these are limited (also some of the DiscoVision copy very early UK PAL releases are like this) Also up until ~1984 the discs had the small sticker with barcode under the label, after that they disappeared.
Below the markings for Sonopress (Laservision and Laserdisc) using smaller labels than PDO, but as I highlighted above I also have discs pressed by Sonopress with a larger label, so you dont see the mint markings - one other speciality of Sonopress, I have several single-sided discs, where the blank side is colored blue. That is really helpful info. A big thanks for all the useful posts on this, clarifies quite a bit. As mentioned above I was told many years ago that after the very high fail rate & the large number of PDO LDs being returned to retailers that there were quite a number of changes made at the Blackburn plant, almost a total refit but is that correct? Again thanks to all for the posts here. Cheers .
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