TubaForum.net

https://the-brass-shop.com/anton-pini-6 ... uba-e3949/

Anton Pini was apparently a swiss importer of German tuba's, looks quite a lot like an old Meinl recently shown in a video byTubalernen.de but that is a 6/4 and based on the dimensions (50cm bell) the Anton Pini is a 5/4

Anyone have any info on these?

handsome, and only the C and C-sharp (as expected) seem flat

The S arms are elegant

My guess is it's a Cerveny stencil.