I would gladly pay it's worth in cash or exchange for a keyboard of equal worth. PM me if anyone has any proposals

That's interesting but not quite what I'm looking for. None of those seem to be ISO layoutmotoko wrote: 26 Mar 2021, 21:20 The guy that sold the 6312s has a few 51xx boards:
https://www.ebay.com/itm/VINTAGE-BRAND- ... Swr-xgTUcv
https://www.ebay.com/itm/VINTAGE-NEW-BT ... SwyWdgTUK6
https://www.ebay.com/itm/RARE-NEW-RETAI ... Sw629gOLQ3