This one is a long shot, but here goes...
Looking for one of the original 90s bootleg Sega Mega Drive/Genesis cartridges that have the so-called "Simon Wai" prototype of Sonic the Hedgehog 2, sold before the original release of the game. Open to make a generous offer.
Here are some pictures of what some of the bootlegs look like, according to Google:
(https://pm1.aminoapps.com/7567/e6d85b083c6f63f7286eadd9e8b33d432b4c92a5r1-2048-1349v2_uhq.jpg)
(https://lh3.googleusercontent.com/proxy/wVg5DQO3JLjyHOkS8__IAQ3K_lt-SfsLYYObIlkrZsmwquChLl7iE_achu3Yr0H_fiRU5zb8YDS-zuley8FNyLDPCMQGxP8_CMgVNUPVW7iaEjoSmIZQ)
(https://gbatemp.net/attachments/0fa722e2-f335-4496-8347-e04f6f3b5d6f-png.187489/)