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Are standard shell bearings marked?

Posted: Sat Mar 08, 2008 5:33 pm
by leyther8008
Dumb sounding I know but are standard big end and main bearings stamped 'STD' is it only he undersized ones that are stamped, +10, +20 etc.
As I,ve just pulled one of each out of a spare block and neither has got any marks other than
Big end:- G in a circle, A in a circle, KM
12A630
Main:- PV in a circle 4499 (one end of shell)
AEA 471 (other end of shell)
Thanks in advance
B