Pete, this is long overdue on my part but a dump of many serial numbers from my collection follows. More to come as I can get to the other components either in storage or without the rear panels immediately accessible.
9090DB,817063736,Sansuiman
9090DB,817081449,Sansuiman
8080DB,827050275,Sansuiman
890DB,827030060,Sansuiman
9900Z,812060474,Sansuiman
QRX-9001,237071939,Sansuiman
QRX-9001,237060206,Sansuiman
BA-3000,245070097,Sansuiman
CA-3000,225070198,Sansuiman
AU-9900A,247030079,Sansuiman
AU-G99X,646044121,Sansuiman
AU-111,527120564,Sansuiman
A-80,816120668,Sansuiman
TU-9900,847040155,Sansuiman
TU-719,849030528,Sansuiman
TU-919,219080056,Sansuiman
TU-919,239040224,Sansuiman
T-80,430120567,Sansuiman
SE-88,625114899,Sansuiman
SE-88,435101243,Sansuiman
SE-88,435100164,Sansuiman
SE-99,615127880,Sansuiman
SE-99,606012435,Sansuiman
SE-9,821120689,Sansuiman
SE-8X,474021725,Sansuiman
SR-929,318040088,Sansuiman
XR-Q9,331020288,Sansuiman
XP-99,315113251,Sansuiman
RS-7,431082346,Sansuiman
RS-7,841060676,Sansuiman
MA-7,238110176,Sansuiman
RA-900,219110175,Sansuiman
RA-900,210070036,Sansuiman
D-550M,251051012,Sansuiman
RA-990,582072534,Sansuiman
SP-5500,92050178,Sansuiman
SP-5500,92050180,Sansuiman
SP-5500,92050181,Sansuiman
SP-5500,92050182,Sansuiman
SP-3700,93100745,Sansuiman
SP-3700,93100714,Sansuiman
SC-5100,457100156,Sansuiman
I'll have further updates as i can get numbers off my other gear here.