Not sure what differentiates a "B" cover from a "C" cover .... There were 2 (at least) different timing covers on Series Bs and 3? (blank covers) on Series Cs. Just because it says HRD on a timing cover does not make it a "B".
I think the only real "foolproof" test for a Series C machine is an RFM and UFM with prefix RC.. Recently there was a picture on the Vincent Facebook page of a Series C "transition" bike with Bramptons. I made no comment of the veracity of the claim because I didn't want the owner to feel pressured into revealing numbers. However, there are many people who think the difference between a B and a C is the type of forks they wear. In truth it is somewhat more complex.
Thanks Brian. Surely these machines also had their frames stamped RC.. My point is that these bikes were often bespoke and some person with the readies could have asked for a Brampton forked bike in 1949 when the new longer RFMs were being fitted. Just saying, that's all.
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