That something I've been wondering for some time as well.
I've got a '60 that was sold new in Nov. '59, #918 off the Oakland line.
Which brings up the move to Fremont & when it happens. One story is mid model year switch, the other is all 1960s were built in Freemont but continued of us the "O" stamp due to oversite.

Last edited by BC59; 08/15/2020 9:34 PM.

BC
1960 Chevy C10 driver 261 T5 4.10 dana 44 power loc
1949 GMC 250 project in waiting
1960 C60 pasture art
Retired GM dealer tech. 1980 - 2022