exxos's Atari, Amiga & retro forum

Built 1992, seems to be one of the earlier motherboard versions. The bodge wire on the cpu pin is as delivered by the factory.

Modifications: FPU added, RTC replaced.

This is indeed amongst the first units produced. According to the very comprehensive guide: https://mikrosk.github.io/clockpatch/history.html

B5 = First batch
2A = October 1992, first production month
0 = Pilot production
3 = PALB
000253 = Apparently the 253rd unit produced

Nice one. However far from the lowest number I have seen - B52A01000010 :) For me the most unique are the Peritel models because those are really different, they don't have the TV modulator for instance.