I've got an old Smiths RevCounter at the TechnoClassica in Essen, Germany.
I think, there is an damaged IC in it.
It is a TexasInstruments part and signed with the TI-logo and:
and crosswise 7223 (maybe the 23. week of 1972???).
On the inside there is stamped 810P
The RevCounter was produced for BritishLeyland's Triumph Spitfire(?).
I need a new IC to use the RevCounter in my new(old) '73 Mini 1000 and
hope, you will be able to help me.
72TR6 U1267 sapphire-blue