Well now, ain't that special? We're looking fer the same rim!
except mine is on a 45-7, western flyer, I'm hunting it's serial currently but, I think frame made by CWC: C20452 A Cw. fits that time frame.
And Mine has the old Bendix 70, made in USA hub.
Whenever I actually looked photos at this bike I already knew it was prob 46-9, although currently digging fer more on dating this. but, these here rims especially wit bendix brake is tossing me for a loop. regardless while not identified yet,, I gots at least some time peiod going here fer ya and they're balloon too.
You can also, xactly as yours, just see the faint stripe on em too. Cept, mine got's plenty rust hovering there, but it's identical.
Otasco
Flying O tire, 26 x 2.125 .