Hi John,

Mk1 814 on front plug 1814 under left grip,early post war B'ham 4 no warning on breech plug.

Junior 1292 on front plug and under left grip.

Senior 86 on front plug and under left grip,post war B'ham 4.

Senior 486 on front plug,4486 under left grip,early post war B'ham 4,no warning on breech plug,extended barrel knurling.

Premier 877 on front plug and under left grip,B series 4 pin blued.

Regards,

Chris.