50-250 USD
Made in Italy. 50-150 USD
Among other things, it COULD stand for Armi San Marcos- an Italian maker of reproduction black powder revolvers.
150 USD
27 grs of FFF Blackpowder.
HOT water and cloth brush. dry well before oiling.
None
A.S.M. is for Armi San Marco, an italian factory making black powder firearms.
50-250 USD or so
It should be a #11 cap. Comes in tins of 100 available from CCI, Remington and many others.
If it is marked ASM (Armi San Marco) all I can be sure of is being made prior to 2000, when ASM was bought by American Western Arms. There may be a date code consisting of roman numerals or a pair of letters stamped on the receiver that would help, but it was not present on all guns.
75
ASM Belfort was created in 1947.