The curves are narrow, making this trumpet longer than most at 20 1/4" with the mouthpiece removed (19 3/8" from bell rim to curve). 453", a narrow bell flare and the rim diameter is only 4 1/16". The valve section is marked "M" (medium) and is the smaller of three sizes made by Olds, with a bore size of. From their introduction the Military Models had mobile third valve slides and this has a stop rod to prevent it from falling out as well as a similar looking stop rod on the main tuning slide for quick change to A. The unique bell engraving, with American bald eagle, seen here appears on every Military Model that I have seen whether with hammered finish or not. It certainly makes sense that a considerable amount of brass would need to be removed from the interior of the bell flares to make them smooth and this would probably be impossible with the thinner bell brass. I have come across a few of these and it is interesting to note that the bells are made of extremely thin brass, measuring about. The Military Model trumpets and cornets were also available by special order with smooth bells. In the manufacturing of these bells, the inside of the final flare is scraped and polished to remove the backside of the hammer dents, but these bumps are present in the rest of the bell interior. In my experience, Olds trumpets and cornets with hammered bells are all excellent playing instruments (assuming that they haven't been modified or otherwise abused or worn out). Conventional wisdom is that the bore of a brass instrument must be as smooth as possible for maximum acoustical efficiency. Olds instruments were always superior in construction and playing qualities. Other makers copied this finish but only on instruments of much lower quality. There are a few earlier Olds trumpets with hammered bells that appear to predate this introduction, but the Military was the only model where this was the standard finish. Olds and Son in about 1933 with the distinctive hammered finished bell as shown here. The Military Model trumpet was introduced by F.E. Check out some additional info about the Olds Military model from my friend Robb Stewart's website: From Robb Stewart (master trumpet restorer and Olds expert) The way the hand-hammered bell catches the light is simply gorgeous! Due to the design this trumpet is definitely on the more brilliant side of the sound spectrum. This horn has been beautifully restored (I'm not sure by whom) and it is a fantastic playing instrument! A couple things to note are the small chip on the receiver (the receiver might not be original) and the missing tuning slide stop rod. Here's an incredible trumpet from my personal collection! I really don't want to sell this one but my house rule of "one horn in, one horn out" is the only way to keep my collection under control.
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