Ok, the frame number is indeed listed as that in the Key Cards, it had C456435 as the C number, and the last users were the 1st Foresters, it was struck off at 26-06-1963
So if it were rebuilt, between 1944 and 1948 it would have had another C number, one that started with 14. so I personally think, the guy who wrote up the info for the Key Cards, noted down some casting number? Spare frames, came without any number..... Wasn't ASH, Ashchurch? just going from memory here, so could be wrong.
Cheers,
Lex