From troedelheinrich2011 on ebay

(Helen) This completely mysterious alto appeared on the German eBay site in May 2011. The seller didn't provide any information about the horn. All he/she said was: "Saxophon * Dachbodenfund * sehr alt * SAXOPHON misste um die 100 Jahre alt sein!" Which translates to: *Saxophone* attic find *very old*. The saxophone must be around 100 years old!"

Well, the saxophone isn't around 100 years old. It's obviously newer than that -- [the] microtuner [implies that] it might be from the 30s.

The bell badge doesn't look familiar to me at all, but perhaps it did to some players or collectors in Germany, since this horn did sell. As a matter of fact it attracted a fair bit of attention. There were 45 bids on this horn by auction's end, and the winner paid EUR 231.00 for the privilege of calling this obscure sax theirs.

(Pete) I remember seeing this on ebay and thinking, "I hope no one asks me about this because I have no idea who made it."

I know of a bunch of horns from the Netherlands and Belgium that do have badges attached to their bells. Kohlert (Czech) also had one for a while in the early 1900s, but it wasn't as elaborate.

In 2019, I saw pics of another horn that looked similar -- no badge, though -- and was tipped off that it might be an Adler. I think that Adler is probably the correct identification.