OC-3 serial number

[tomseabee]

My model number is OC3-42 and serial number is 8WH300. I have the serial number range but I'm a little confused about the range. If you go by the first number "8" it seems to fall in the all numeric serial number gap. If you go by the "300" it goes earlier. What number takes priority?? Thanks for the help in advance.

[Robert Barbour]

Yours is a 1952.  The starting serial number for 1952 is 3WH712.  In 1953 Oliver got away from  different serial numbers by model and went to an all numeric serial number with all models mixed together so for 1953  they all started at 350000 and for 1954 450000. Then in 1955 they went back to their original serial numbers and the OC 3  started at 11WH760.  So your is a 52.

[tomseabee]

Thanks Robert. It makes perfect sense but I didn't know for sure. Have a nice weekend.

Tom