In Rob Roy the movie the coins are whaled over in a leather bag that's exactly what my uncle described of a bag found up north supposedly from the 1757 full of musket parts, worms, balls, trade axe heads ..leather won't be cut thru -tough ..flexible ..easy shaped to anything ..a rawhide un tanned woulda been what any highlander would've had ..beyond selling skins to local leather worker or as a trade ..rawhide ..maybe . If leather's too expensive for a prototype try some heavy canvass to get the feel ..black powder guys may have thei dieas on carrying and toting gear .
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