ecu_tuba wrote:This summer, I bought a B&S F tuba from Baltimore Brass, and the only markings on it are the serial number, the B&S logo, and the words "Perantucci Model." I was just wondering if anyone knew where I could find how old the horn is.
If it's a standard PT-10, it won't be that easy, unless someone knows how to date on the basis of serial number. But there are some clues.
I have a B&S Symphonie, made probably in the 70's, and another nearly identical B&S F tuba (no model marking, and no mention of Perantucci), dated in the early 90's. The provenance dates the latter instrument, and comparing the markings and construction details dates the former instrument.
On the older one, the braces attach to the bows using very slender solder pads made from tapered round rod that is flattened on one side. The braces rods themselves have a straight taper, getting thick to the middle where there is a decorative groove. The braces on the later instrument use a pad of similar shape, but wider and made from sheet brass. And the rods have a curvy shape more like a Victorian table leg.
The ferrules on the old have no decorative grooves at all, and the valves have no engraving. On the later one, the ferrules are grooved and the valve casings are engraved. The older one has a bell ring and the newer one does not.
Instruments made before 1991 will say "Made in GDR". GDR = German Democratic Republic = East Germany before unification. Instruments after 1991 say "Made in Germany". I suspect those made for the second-world markets might have said "DDR", which is the same things as GDR except in German.
Beyond those details, the instruments are basically identical (except for where they were intended to be different: One was supplied with clockspring action instead of open wire springs, one has six valves versus five, and neither of these features help with dating). The tuning slides are interchangeable between them, etc.
A quick measurement of the slide tubes will tell you which PT model it is. The different PT models have different valves, different valve paddle configurations (4+2, 5+1, etc.), and, more recently, different bell throat sizes. These dimensions and model names have not changed over the years that I can tell.
I'm tempted to suggest that if it says nothing, it's a PT-10 (the original Perantucci model) from the early 80's when they started their collaboration with B&S. That's mostly guessing, though. Bob Tucci might be able to help you if you send him a couple of pictures.
Rick "not knowing if B&S serial numbers were any more meaningful than many other German manufacturers" Denney