At a local gun show last weekend, I was shown what appeared to be a 26.5mm flare fired cartridge case which had me confused and not only because I know nothing about flare cartridges! Regrettable I did not have my camera or calipers with me.
The case was brass, exactly 100mm long and had an undercut rim. The head was flat (unlike some German flare cartridges I have seen where the rim has a wide bevel). The rim was not as broad as normal flare cartridges and fitted various French flare/signaling pistols (the guy had a great display of flare pistols), which require a case with a rim diameter less than the “normal” German-type cartridges. The headstamp was “W.A. 1” at 12 o’clock and “Br. 1 35” at 6 o’clock. On the latter, the “1” could be an “I” as there was no “foot” to the letter.
Can anyone identify this case (is it a flare case) and interpret the headstamp please?