It is pretty similar to that, but there is no maker's name on it.
That's pretty definite then - I've got another one "pretty similar to that, but there's no maker's name on it". As far as I've been able to determine, Chr. Fr. Winter & Sohn were instrument makers and Fine Cabinet Makers, and didn't make lenses at all. But they made some very beautiful cameras, like the one I bought to get this casket set. I sold it shortly after, since I already had several better ones.