NY Bach Rotor Stamp Question

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PVH
Posts: 15
Joined: Fri Jun 15, 2018 9:45 am
Location: Chicago

NY Bach Rotor Stamp Question

Post by PVH »

I have an old NY Bach 36b with a number stamped on the outside of the rotor valve between the two ports that go into the valve tubing. Does anyone know what a number there would signify?

Thanks!
hornbuilder
Posts: 854
Joined: Wed May 02, 2018 9:20 pm

Re: NY Bach Rotor Stamp Question

Post by hornbuilder »

It is a batch number. The rotor and casing "should" have the same number. There is no record, that I'm aware of, that ties that number to any date. It is purely to keep the casing and rotor as a pair.
Matthew Walker
Owner/Craftsman, M&W Custom Trombones, LLC, Jackson, Wisconsin.
Former Bass Trombonist, Opera Australia, 1991-2006
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