I thought it would be worthwhile to share this Gallus medallion. It was in an old fake collection, part of which I acquired last year for study reasons. I had picked the Gallus because it looked like a quite convincing old cast of an original, even showing corrosion spots and some smoothing, but I never gave it much thought so far. Recently, however, I was browsing through the famous Trau catalogue (Sammlung Franz Trau: Gilhofer & Ranschburg / Adolph Hess AG, Vienna, May 22nd 1935) as a friend of mine asked me to check a coin type he was doing some research on, and stumbled by chance over the Trau specimen - which, as one may guess from the thread title, turned out to be my own coin.
Trebonianus Gallus, AE Medallion (36 mm, 48.21 g), Rome.
Obv. IMP CAES C VIBIVS TREBONIANVS GALLVS AVG, radiate, draped and cuirassed bust right, seen from behind.
Rev. ARN - ASI, Apollo (or mountain god?) standing left on rocks, holding branch and knotted staff.
Cohen 23 (400 Frs.); Trau 2844 (this coin
According to my prices realized list, it did not sell in 1935, so maybe it was already withdrawn back then, although the fake collection it came from originates from a different (but contemporary) auction house. The patination, corrosion and smoothing make it very convincing. It probably does date no later than the 19th Century, the era in which Franz Trau senior was an avid and famous collector, but may be older, as the Prinz Waldeck Homer which I acquired from the same fake collection: http://www.forumancientcoins.com/board/index.php?topic=67072.0