32SII ROM versions and serial numbers - any way to correlate?

[J-F Garnier]

This thread gives several ROM samples of version vs datecode.
My 32SII, ver.1, is ID9 (assumed 1999, in accordance with my date of purchase).

On the date of the introduction of rev."1":
Rev. "A" and "B" are mentioned by Eric Vogel in the HHC 1991 conference ("Reengineering the HP 32S", at about 23').

J-F