Be familiar with the Birmingham Proof and Birmingham View represents – correspondingly BP and BV – each under a Crown But we have been produced mindful, by a contributor, of two modern rifles, a BSA Mk * With, like, the BSA unit 15 or BSA unit Martini-actioned rifles, the view mark should-be apparent each about barrel and on the experience human anatomy RHS leading. With such B.S.A. rifles the Proof mark is only about barrel (and on the action falling-block), as well as the 3rd mark on the barrel may be the ‘NP’ tag for Nitro-Proof, in addition beneath the top. Proof , View and …