I hate to be this guy on my first post, but I searched the Internet for hours last night trying to figure it out to no avail. Here's what I can tell you about the bike: the guy who sold it to me says his bike geek brother-in-law says it's a Schwinn. It has two serial numbers on both sides of the head tube, one of which I can read perfectly, the other of which I'm not sure if I can see it all or not due to new paint. The serial numbers are written vertically, meaning you have to turn your head to the right 90 degrees to read them normally. This is why I'm doubting it's a Schwinn.
Anyway, the side with the number that are completely clear reads: 546551.
The other side I'm probably leaving a number or letter or two out of reads: M 0 6478.
And that's basically all I've got. I don't know if you guys will know it right away or if this is way too vague. I apologize for my ignorance in this matter. If you think better pictures or any other info might help, let me know and I will do my best to oblige. Here is a fairly blurry picture of the bike:
Thanks for any help!
P.S. I'm not expecting this to be a particularly unique bike or anything, I'm just curious about it. I"t might be last year's K-Mart model for all I know.