Without a doubt proofed in Suhl and the reason I find this so interesting is that Karl Adolf Heym owned Heym during this post-1912 to pre-1923 period. With this and considering the longarm is a Heym, I would have to equate the AH stamp with Adolf Heym. RW is not as simple and my first guess would be August Richard Weisheit of Mehlis. Another possibility would be Robert Werner of Suhl and I would say R. Wolf but I believe he was a stocker.

Kind Regards,

Raimey
rse