FB (MI): "Karl King" (?) rotary BBb

[arpthark]

https://www.facebook.com/share/3JePfECKGxwwXTD1/

The "Jean Baptiste" of its day?

[hrender]

I'd guess a Cerveny stencil.

[arpthark]

I contacted the seller and it was a typo, actually Karl Sum. The engraving reads Karl Sum, Instrumenten Bau., Kirnbach/Wolfach.

I am guessing it is also a stencil. Based on the other trumpets and horns I'm seeing using that stencil I'm wondering if it actually might be Russian. Looks kinda like an old Zimmerman to me. Maybe B&M. Wonder if @TheBerlinerTuba knows anything about Karl Sum.

[bort2.0]

Is the kranz inside the bell as well?

Karl Sum was a family run music store in SW Germany. Seems to have closed sometime in the last 10-15 years. From what I gather, at least the trumpets (and related) were built by the company.

Nice looking tuba. Kranz = fancy, so I wouldn't worry so much about build quality or anything. Pretty standard design that's tough to screw up for BBb. It's a matter of condition and repair, more than anything. And definitely not Russian IMO. It's far too nice for "is tuba" standards.

[arpthark]

Is the kranz inside the bell as well?

Karl Sum was a family run music store in SW Germany. Seems to have closed sometime in the last 10-15 years. From what I gather, at least the trumpets (and related) were built by the company.

Nice looking tuba. Kranz = fancy, so I wouldn't worry so much about build quality or anything. Pretty standard design that's tough to screw up for BBb. It's a matter of condition and repair, more than anything. And definitely not Russian IMO. It's far too nice for "is tuba" standards.

Specifically, the wide kranz reminded me of this Zimmermann (pre-St. Petersburg/Communist) BBb, but the resemblance may be purely superficial, along with the fact that both Soviet trumpets and Karl Sum trumpets employed those weird top action rotary valves.

[TheBerlinerTuba]

The tuba is an Amati 4/4 BBb stencil. I believe Sum did make or at least assemble their own tubas many decades previously, but by the 70s it was just stencils.

I contacted the seller and it was a typo, actually Karl Sum. The engraving reads Karl Sum, Instrumenten Bau., Kirnbach/Wolfach.

I am guessing it is also a stencil. Based on the other trumpets and horns I'm seeing using that stencil I'm wondering if it actually might be Russian. Looks kinda like an old Zimmerman to me. Maybe B&M. Wonder if @TheBerlinerTuba knows anything about Karl Sum.

[Heavy_Metal]

Sold.