as stated, and shown in your photo, the r over w with the intertwined s, is too close not to be related to the mark on daryl's gun....and i will bow to the incredible background and historical knowledge you bring to this game.
i am but a poor lad, with a worn copy of "the standard directory of proof marks", by gerhard wirnsberger and translated by r. a. steindler.... and with the curiosity to search.
and i will succumb to a recurring urge....and pose a question; out of all this astonishing knowledge, particularly of the austrian/german and belgian gunmakers....surely there must be some indication of some of their favored biers.
best regards,
tom