Is there any doubt with this one?.

[Thunderbox]

The proof is possibly about 15 years old (Birmingham don't use such deep stamps currently), but is not particularly ancient.

Lack of proof on the bolthead is, of course, an offence by whoever "offered it for sale" to you. At the minimum, I'd hand it back to them and ask them to have it reproofed at their expense. Probably someone has been swapping boltheads in the days when most shooters used to have such spares off-ticket.

(Edit: the lower group of four "centre punch stamps" on the bolthead is quite possibly a BNP proof mark - or someone's attempt to replicate one. Current BNP stamps often are just four "dimples"; having said that, if the bolthead had been proofed on the rifle, it would have the same deep stamps as on the bolt and receiver.)

If the rifle apart from the bolt is otherwise all-matching, then its probably a normal example of a DP rifle that has been used as a civilian shooter for decades. Unfortunately, contemporary alarmist internet postings about DP rifles have caused some owners/dealers to start grinding off the DP stamp. Mind you, the professional gun trade also used to do this - one indication that not all DPs (particularly pre-WW2 No1s) have anything wrong with them.

Have the rifle checked over by someone who is familiar with Enfields. If the bolt/bolthead are properly fitted and it re-passes proof without anything moving, then it may be ok to use.

I appreciate that my comments may well re-inflame the whole "DP" debate, but the fact is that the UK civilian shooting community have been using such rifles for decades without any documented issue.