The 1575 is the SN it is located by the breech, same side as the mag stop, it also appears on the bolt handle, the UV is on the top flat bit of the brass buttplate, the out of service markings are on the nose cap, i have to look to c if there are others i cannot remember off hand, the B.S.A.co is present by the trigger guard same side but nothing else on this part. 1575 is also on the bolt handle. There is no checkering I meant the actual saw cutting marks on the timber at the nose cap, the buttstock has the BSA logo on the bottom of it. i cannot see any BM logo unless its the cursive one under the crown i cant make out i forget what this marking is.
I tried sending the picutres over to you via this method but its giving me the same hassle, im going to email them to myself then resize them on a different machine tomorrow, sorry for the delay.