All right, what's this supposed to be?

[pete]

https://classic.europeana.eu/portal...html?utm_source=new-website&utm_medium=button

It's definitely not a soprano Sarrusophone. Here's one. I think it's possibly a keyed bugle missing some keys. It is a Bottali, though, based on the stamp.

 

[Groovekiller]

My guess is sopranino sarrusophone. It's small enough, both in length and bore size, that toneholes can be placed in the proper position and played without keys.

 

[pete]

Oddly, it was easier than I thought to look up a sopranino Sarrusophone (static pics are here). It looks like, well, a smaller soprano Sarrusophone. The alto Sarrusophone is the first instrument in the Sarrusophone family that's in the ophicleide/bassoon shape.

I just realized this while typing the above sentence: maybe I should see what a soprano ophicleide looks like. Family pic. Maybe? It's not that good of a match. Maybe I'm just looking at it wrong.

 

[Groovekiller]

A soprano ophicleide would be a keyed bugle.

 

[pete]

I think it's possibly a keyed bugle missing some keys.

A soprano ophicleide would be a keyed bugle.

Well, there you go .