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Serial Numbers – Trombone

by Bach Loyalist

There are multiple sources for the Vincent Bach trombone on the internet today. We decided to combine into a single timeline reference to better understand the instrument serial numbers vs. the status of the company.

We’re always looking for more information/corrections to include, so please email us through our contact us link in the header. All information is copyright per the original owner/source.

Serial Number Year Year Event / News
1890 Born Vincent Schrotenbach
in Vienna
1916 Vincent Bach designed and handcrafted his first mouthpieces.
1922 Incorporated as
Vincent Bach Corporation, Inc.
New York City
Index #: 7517
August 18, 1922
1925 “Mercury” trademark filed
Filed: August 14, 1925
Registered: May 16, 1926
1925 “Stradivarius” trademark filed
Filed: August 14, 1925
Registered: May 16, 1926
1927 “Mercedes” trademark filed
Filed: March 21, 1927
Registered: May 31, 1927
1928 1st Trombones Designed
1 1929

First Trombone completed June 26, 1929

159 1930
193 1932 Bach Model 16
200 1933
400 1935
1936 First mention of Bass Trombone Designs
Oct. 16, 1936 – Bach Diary
10000-10999 1939 Bach Mercury Models
1600 1940
2118 1941 Bach Mercedes Model
2200 1942
2500 1945
3056 1948 Bach Model 12
3450 1950
4052 1952
1953 Moved to
Mt. Vernon, NY50 South MacQuesten Parkway
Mt. Vernon, NY
(map)[mapsmarker marker=”8″]
4500 1955
2722 1958 Bach Minerva Model
5700 1960
5950 1961
1961 Vincent Bach Corp.
purchased by H & A Selmer, Inc.
(September 25 1961)
“Vincent Bach” trademark filed
Filed: May 2, 1962
Registered: Feb. 19, 1963
“Bach shield” trademark filed
Filed: May 2, 1962
Registered: July 30, 1963
Feb 7, 1963 Closed Mt. Vernon, NY
6900 1964
70XX 1964
1965 Production started in
Elkhart, IN
600 Industrial Parkway
Elkhart, IN
8000 1965
11800 1970
17500 1975
1976 Vincent Bach Dies
25000 1977
39000 1979
45000 1981
55000 1983
65000 1985
91000 1990
115000 1994
1995 Selmer Industries buys Steinway Musical Properties
1996 IPO as Steinway Musical Instruments
1997 “Bach Circle” trademark filed
Filed: May 1, 1997
Registered: Oct. 13, 1998
2000 Acquisition of United Musical Instruments
2002 John Stoner named CEO;
Conn Selmer
2003 Merger of UMI and Selmer into Conn-Selmer
“Vincent Bach” trademark
Renewed: March 5, 2003
2004 Closed Original Selmer Plant
North Main Street,
Elkhart, IN
2004 John Ratzenberger’s
“Made in America”
2004 “Bach shield” trademark
Renewed: Feb. 13, 2004
187000 2006
646013 2007
Start of the “True Bach”
Advertising Campaign
Serial Number Year Year Event / News


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Jim Hopkins February 22, 2012 - 2:19 pm

It would be most valuable to all Bach Loyalists if we knew what the last serial number was just before the strike. I am sure those Bach instruments put together by the original craftsman were the quality horns. It is furthermore important for those who may purchase one of these newer ones to know that were not made by the original craftsman. On the used market they should not demand more.

admin April 6, 2012 - 3:00 pm

There has always been variation in Bach Stradivarius trumpets. Not sure if anyone can truly saw which serial number is not a good instrument. Suggest you look here for additional information. http://www.bachloyalist.com/serial-numbers-trumpet/

Please use our discussion forum at http://www.trumpetforum.com if you want to start a full discussion.

Bjorn Bergholtz November 22, 2012 - 12:18 pm

It seems that instruments made in the early seventies were stamped ELKHART IND. At some point they changed that to ELKHART IN. Does anyone know at what time this was changed? It might help in dating instruments from that era.

Christian August 9, 2016 - 3:50 pm

Björn, my Bach 42 with serial # 36326 which should be from 78/79 according to the list above still has IND.

Brian February 22, 2019 - 7:38 pm

I bought my 42, s/n 15641, in 1974 or 75. It has ELKHART, IND. on the bell.

AL March 3, 2019 - 1:15 am

That serial would place it about 1966…

Dirk January 4, 2013 - 1:32 pm

I own a Bach Stradivarius Model 4 New York trombone which has the number 128 stamped on the slide as well as on the bell. On the slide the 128 is where normally the serial number is located, on the bell it’s where the bell model on later model can be found. According to this website Model 4 was introduced in 1935 and according to the serial number chart 1935 correspond to serial 400 while serial 128 would more correspond to 1929/30. Does anyone has more information?

Kind regards, Dirk

Forrest Shade February 6, 2013 - 12:33 am

I purchased a Bach Strad trombone in 1948. It was new or near new. It has no model no on the bell, but on the slide it has” 3487″ over “MODEL” over “34” Can someone please email me and tell me something about my instrument. Thanks fdshade@aol.com

Peter Boor January 19, 2014 - 11:51 am

Does anyone know what the letters HGM signify on the bell of a Bach 42 Tenor trombone with F attachment? H seems to indicate ‘heavy bell’, G seems to indicate Gold Brass Bell, but WHAT, for goodness sake does the M stand for??? RSVP

Joe February 19, 2014 - 9:59 pm

The M stands for open throat bell. Not sure why M was chosen but that’s what it means. The throat entrance to the bell is larger than typical; the diameter reached in the bell end of the tuning slide is larger. My guess is if you took that tuning slide and tried to put it into another 42 bell, it would be too large.

Joe September 29, 2016 - 8:19 pm

M actually stands for open neckpipe.

Ray November 22, 2017 - 12:09 pm

The “M” likely means it has a modified bore. In some way it is different from the original. For example, one or both slide bored has a different size, thus modified.

Gelson Maia July 16, 2016 - 6:34 pm

i have tenor trombone model 42 serial Number 89124, whats year fabricated ? And more informations. Thanks

2B36B42B October 10, 2016 - 11:21 am

Is it correct to assume that the serial number on the slide is used to date the horn (not the number on the F-valve body)?

Alec February 2, 2018 - 9:56 pm

I was wondering if someone can help me out with this. I have a BACH Stradivarius 16 Trombone Serial #4732
By the serial number chart on the page here, it seems like it would have been made in the late 1950’s but as I look further I see that Production started in Elkhart, IN in 1965. There is an Elkhart stamp on the horn. So, when was this bone actually made?

ianB March 24, 2018 - 9:17 am

I have just purchased a Bach Stradivarius 42GH trombone, serial number 127298 and am interested to know what the “H” signifies.

joelmarkgreenblatt May 2, 2019 - 1:20 pm

Does anyone know when a New York bach 6 trombone with a stamp 401 means?

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