WANTED: Columbia BI or BII rear mount assembly

[Uncle Vanya]

I’m trying to finish up a few prjects. Need a rear mount assembly with horn elbow for either a BI or BII.
I’d prefer one which uses the bayonet reproducer fitting for the No.5 or NO.6 reproducer but would be
Happy with a unit which uses the earlier Analyzing reproducer. I do not need a horn.

[downsouth]

Is the backbracket on a Col BNW the same?

Wes

[Uncle Vanya]

No, alas! The BN and BNW uses the common. Smaller bracket held in place with two bolts.
The Sterling and Improved Sterling used a heavier bracket with a three bolt mounting.