Hi Rob
Any WW2 & post war Aust manufactured muzzle cover for a 25-pdr up to 1961 will be for a barrel without a muzzle brake. They are for the 25-pdr Mk2 (etc) ordnance.
The only Aust application before 1961 was the Yeramba SP.
Looks like you have an Aussie muzzle cover going spare ...
Mike
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