I have rescued what I think is an Oliver OC-3 from a woodlot we purchased.  On the engine just behind the carburator I found a tag under some heavy paint.  The tag read as follows:
1XA3
675XXX(X couldn&#039;t read number for sure)
008   006
Does any one know if this is an engine number or the number for the whole machine ?
If this just an engine number, where should the tag be located that is for the machine?

Many Thanks
John H.