@tubetime Oh wow, I went through multiple comprehensive manufacturer logo lists, even a russian one, and could not find it. This is some really obscure stuff!
But yeah, I bet that it behaves like a OPA211 from TI

@tubetime it looks almost exactly like Telecom Eireann's logo, backwards.

https://www.flickr.com/photos/ajcarr/536570712/

(TE was the national telco of the Republic of Ireland)