Both A & F were included on the 4/29/68 price change; its very clear on that.
I would guess that some RA2s could have been billed as RA1s but seriously doubt it.
I also have the same percentage of doubt that the reverse was done.
Im not saying that there werent any RA1s built after the 4/29/68 date but
seriously doubt if any were ordered and built after that.
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