Since I got curious about
[HLD-X0] Serial numbers I did the same exercise with the HLD-X9:
old numbering system:
(YY100XXXXT))
QH - 1996 Aug -
3015~3150QI - 1996 Sep -
3154~3387QJ - 1996 Oct -
3432~3795QK - 1996 Nov -
3867~4038QL - 1996 Dec -
4108~4660RA - 1996 Jan - (none found)
RB - 1996 Feb -
4703~4781RC - 1997 Mar -
4861~4898RD - 1997 Apr -
4906~4988RE - 1997 May -
5086~5173RF - 1997 Jun -
5220~5290RG - 1997 Jul - (none found)
(new numbering system:
LLTT00NNNNJP)
RH - 1997 Aug -
5342RI - 1997 Sep - (none found)
RJ - 1997 Oct - (none found)
RK - 1997 Nov -
5371RL - 1997 Dec -
5407~5497SA - 1998 Jan - (none found)
SB - 1998 Feb -
5509~5512SC - 1998 Mar -
5554~5583SD - 1998 Apr -
5678~5745SE - 1998 May - (none found)
SF - 1998 Jun -
5752~5796SG - 1998 Jul -
5885~5897SH - 1998 Aug - (none found)
SI - 1998 Sep - (none found)
SJ - 1998 Oct -
5923SK - 1998 Nov -
5962~6057SL - 1998 Dec -
6124~6141TA - 1999 Jan -
6166TB - 1999 Feb -
6235TC - 1999 Mar - (none found)
TD - 1999 Apr -
6293~6300TE - 1999 May -
6301~6342TF - 1999 Jun -
6363~6394TG - 1999 Jul - (none found)
TH - 1999 Aug - (none found)
TI - 1999 Sep - (none found)
TJ - 1999 Oct -
6422TK - 1999 Nov -
6489TL - 1999 Dec -
6506~6543UA - 2000 Jan - (none found)
UB - 2000 Feb -
6553~6592UC - 2000 Mar -
6616 (new logo! how is that possible?)
UD - 2000 Apr -
6669UE - 2000 May -
6722~6746 (old logo)
UF - 2000 Jun - (none found)
UG - 2000 Jul - (none found)
UH - 2000 Aug -
6815 (old logo) and
6830 (new logo!)
UI - 2000 Sep - (none found)
UJ - 2000 Oct - (none found)
UK - 2000 Nov - (none found)
UL - 2000 Dec -
6879~6880 (old logo)
AA - 2001 Jan - (none found)
AB - 2001 Feb - (none found)
AC - 2001 Mar - (none found)
AD - 2001 Apr - (none found)
AE - 2001 May - (none found)
AF - 2001 Jun - (none found)
AG - 2001 Jul - (none found)
AH - 2001 Aug - (none found)
AI - 2001 Sep - (none found)
AJ - 2001 Oct - (none found)
AK - 2001 Nov - (none found)
AL - 2001 Dec - (none found)
BA - 2002 Jan - (none found)
BB - 2002 Feb -
6968 (new logo)
BC - 2002 Mar -
6973~6994 (new logo)
BD - 2002 Apr -
7012~7108 (new logo)
BE - 2002 May -
7140 (new logo)
Assuming the counter starts at 3,000 like the X0, ~1,650 units in 1996 (starting from July/August), seemingly falling to ~750 in 1997 then another ~1,800 units over the course of 1998-2000 for a total of 4,000+?
Wasn't the X9 supposed to be produced in larger quantities?
Julien