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Is This a Columbia BC Concert Horn?
The horn is 54" tall with a 20 ¼" bell, has flat seams and a 13/16" opening on the end.
I can see some remaining solder on the small end, so I know it had some kind of nipple.
What would be the proper dimensions, and proper nipple for this horn?

I have included a drawing of an idea I have to make this horn useable as a BC or standard horn.
The OD of the large piece would have to be 13/16" to fit the horn, and the ID of the small piece would have to be ⅝" to fit a standard reproducer.
The thing I don't know is what the ID and OD would have to be where they go together, (I think threads or a bayonet mount would work).

What do you think? Is there an original adapter out there? Pictures would be great.

Any help would be appreciated,
Thanks, Bob S.

Bob,

The photo below shows an original BC horn (in the background). Later production BC horns were a flower type.

Your horn's dimensions don't correspond to the BC horns. I believe your horn was built by the Standard Metal Manufacturing Company, while the original BC horns were supplied by Hawthorne & Sheble.

Hope this helps...

George P.

The horn on this BC is much smaller, as shown:

Schweg,

What is the OD and ID of the nipple on the end of your horn?

Thanks,
Bob S.

I hope a picture will tell the story to your satisfaction. Also, the horn is only about 15 inches in length.

Steve

Steve,

Wow that's BIG!

Thank's
Bob S.