Eb Alto
Manufacturer: Hohner Musikinstrumente
Model: President
Serial: 2541
Phase 2 Horn
Finish: Quadruple, semi-matt silver plate, and likely had a gold plated inner bell originally
Source: boplover on eBay.de
This Hohner has rolled tone holes; as well as the G# and C/D trill keys.
If you want to change how many album pictures per page, use CTRL+ and CTRL- (Command + and Command - if you have a Mac). 80% looks great on my 4K monitor.