Removed serial no. could be a sign of a stolen guitar at some point in its life.I once bought a Martin,
got it home,checked the serial number,which made no sense,and the guitar was back with the dealer
at 9.00am the following morning.
Both, my '64 Memphis Reissue 345 and my Murphy Ultra light aged '61 335 are approximately 0.25" wider in the body (rim width) than both my 555 & 535. Ren, told me specifically that the 535/555s are a little narrower (to reduce feedback) and the F holes are a little wider on Heritages. If your 335 is not a reissue of a particular vintage year, maybe your 335 is a little narrower than the vintage year reissue Gibbys?