I have two of these, both identical to the photograph. Both Chips are H/PC Pro, and are the final z50 ROM build
(Check yours against the info in the image below
)
IBM Diag identifies the chips as S3A61.
I will test before shipping.
Weight is nominal < 100g. Postage insurance is £3.30 on-top of www.royalmail.com postal tarrifs. If you want more than one I will bundle shipping.
In line with my parts policy -
All offers considered