1952 Bach New York Stradivarius Model 12 Trombone w/ Photo of Factory Ledger

The Holy Grail of New York Brass ​Collectors and professional players, here is a rare opportunity to own a piece of brass history. This is a genuine 1952 Vincent Bach Stradivarius Model 12, manufactured at the legendary New York (Bronx) factory. Completed on December 19, 1952, this horn represents the pinnacle of Bach's craftsmanship just before the move to Mt. Vernon. ​Documented Provenance (The "Ledger Card") ​Included in this sale is the original factory ledger card matching Serial #3624. Having this level of documentation is extremely rare and significantly adds to the instrument's collectible value. ​Factory Specs (from the Ledger): ​Bore: .500" (The "gold standard" for lead jazz playing) ​Bell: Model 12-II (7.5" hand-hammered New York bell) ​Mouthpipe (Leadpipe): #423 (Built-in factory original) ​Inner Slide: 18% Nickel Silver with Chrome Plating ​Mouthpiece Included ​The outfit comes with a vintage Bach 22SC (Shallow Cup) mouthpiece. This is a specialized, highly sought-after model designed for lead players who need maximum brilliance and high-register support. It is the perfect aerodynamic match for this Model 12's .500 bore. ​Condition & Playability ​This horn is in honest, vintage condition with a beautiful honey-colored patina and original lacquer wear consistent with its 70+ year history. ​Bell: Excellent resonance and that classic New York "core" to the sound. ​Slide: Matching serial numbers (#3624). Action is good for its age; as with any vintage slide, a professional alignment would bring it to peak performance. ​Note: There is minor surface oxidation/pitting near the receiver and tuning slide (see photos), which is typical for 1950s brass and does not affect the sound. ​What’s Included: ​1952 Bach NY Model 12 Trombone ​Provenance: Includes a digital copy/photo of the original 1952 Bach Factory Ledger Card (#3624) confirming all build specifications. ​Vintage Bach 22SC Mouthpiece ​Original Hardshell Case ​I have 25+ photos available showing every angle and serial number. Please message me with any questions. Shipping will be fully insured.