Unsure

[Bama Bill]

I ran the # on my bike and I am not sure if it is a Columbia.The chainring is throwing me off.The ser# is N 7982 which I came up with 1950.I can not find any pics with that style sprocket or chainguard on that year.I did find the guard on a 48-49.I have seen that sproket but can't remember where.It is unlike the Goodyear I have as well.The wheels and fenders or from a 55 Goodyear ladies bike I have.Any help will be appeciated.Thanks

 

[ratina]

Definitely Columbia. Don't think the sprocket is original

 

[mos6502]

The serial number indicates 1950, and that seems right to me.

The bottom bracket bearings are not original (they would have had a dust cap) so the crank is also likely not original. But the frame is definitely a Columbia.

 

[Bama Bill]

Thanks guys.I'm going to pull the crank to check the bearings maybe it will have some markings.It is definitely frankenrat.