Info wanted on antique telescope

I'm looking for information on an antique beginners telescope set called
"Astron-O-Set" No manufacturer name is shown on any labels or contained
papers. The scope is a cardboard tube refractor, probably about 50mm
aperture, sliding focuser, no interchangeable eyepieces, together with a
wooden tripod and star chart in a black case about 42"x18"x5". Google
turned up absolutely nothing, same with e-bay, astromart, etc.

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Remove first "f" from return address