Originally Posted by
clubman
I'm not sure the OP's cranks are 110 bcd.
OP's crank is 110mm BCD. Specialized-branded cranks were only offered in 144mm and 110mm BCD
https://velobase.com/ListComponents....c-46db6db3a675
The 110mm BCD crank also had a 74mm BCD mounting point for a "granny" gear:
These ~ 84 Super Customs are 110 cousins of the Apex triples but I think these are cold forged, hard to tell without a stamping.
Your crank is 86mm BCD, a clone of the Stronglight mod. 99 crank.
SR "Custom" series cranks (offered in a variety of BCDs) were melt-forged; "Apex" series cranks (also available in several BCDs) were cold-forged.