I found this bike at a local Goodwill recently for $15. Unfortunately someone has stripped the frame down and painted it at some point so there are no identifying marks or badges other than the SN 81 6 87397 which is stamped on the lower part of the seat tube on the left side (riding position). All components are Shimano 105 and it has Shimano Biopace chainrings and 27" wheels (no markings other than the hubs which I forgot to get the names from). To me the bike seems much lighter than I expected it to considering the likely age. Here are a few pics that might hopefully help someone ID it. Thanks in advance.

hmm, that looks very Raleigh Grand Prix-ish to me. I could very well be wrong though.

The components are nicer than the frame, I'd say it was well-loved by a previous owner.

The serial number and its position fits Kuwahara's line of bicycles, and the frame and lug details seem to agree with this. Though they produced frames for quite a few companies and importers, my guess is that it is an Apollo, and judging by the details, perhaps a low-mid level model, maybe something like a Prestige or Prestige XL. The dropouts are not forged like on my Gran Sport, so we'll rule that out.
I can tell you, with some degree of certainty, that it is a 1981 model.

No chance. Those 3D stamped dropouts are Japanese/Taiwanese, and it isn't a Raleigh USA model either.

Looks like someone put a lot of effort into it, for it appears to be a cheap frame that has had a derailer hanger welded to it (possibly out of the former owner's personal pride?), and a load of Shimano 105 drivetrain components added to it.

Well-loved gaspipe. Not bad though.

-Kurt

I didn't even notice the weld first time 'round. Maybe some "Un-Fixied" it

+1, I had a 83/84 Kuwahara that had the identical serial number format and it was located in the same location. Not sure which marketer had the OPS bike, but I'd bet it's a Kuwahara frame. BTW, the 78 Soma I just found, also made by Kuwahara also has the serial number located at the bottom of the seat tube.
EDIT: For $15, its a good find.

I can't help you with ID but holy crap! Is that a kegerator with six taps behind the bike?

For $15 you can't go wrong with the 105 components it has at least.

In addition to my earlier post, after seeing your location, it is probably not an Apollo, as the US was not, as far as I'm aware, a big market, or even a market at all for that brand. It is still definitely a Kuwahara-made 1981 bike though. Perhaps it one of Kuwahara's own, or a Soma, like a poster mentioned above.

The DT cable guide is positioned wrong, and both brake calipers are missing their cap nuts.

Would be amusing if that were the case, but it isn't - it never had one in the first place. It's no doubt a replacement, as derailer geometry/performance is partially hampered by having the top pivot mount placed that far rearwards in relation to the axle.

-Kurt

Yes, Please spill the beer about those taps in the background.

Read the bumper sticker on the can:

"Make your own damn beer! www.austinhomebrew.com 1-800-890-BREW"

-Kurt

P.S.: No, I'm not a wino - just a crazed vintage lightweight fan that has taught himself to identify virtually any lettering off a downtube from a distance of 500 feet.

Thanks for the help guys. I wasn't really expecting anything special but I figured with a full set of 105 components I couldn't go wrong for $15. As much as I hate to say it the thing rides almost as nicely as my late model LeMond Versailles which was more than $15. I was thinking about converting it into a fixie but not really sure if I want to put the $$ into it when I have enough bikes lying around already (according to the wife).

As to the taps I am a homebrewer so yes, it is indeed a kegerator with 6 taps . I left room for an eventual 7th which will be a nitrogen stout tap (think draught Guinness) but that will have to wait till finances allow. I currently only have 4 beers on tap as my brewing time was interrupted by a wedding two weeks ago, hopefully I'll have some free time now that it's over.

So, do you have more bikes or taps?

Does it really matter? After all, I'd consider them of equal importance.

Four is plenty, I'm on my way over...