Easy frame identification
 

i hope ....... lol
has original paint ( color a clue ? ) , matching ishiwata sloping crown fork marked 4 D , suntour gs III dropouts
, flat crimping on drive side stay at dropout , , no head tube holes for badge , no serial number , english threads , 27.2 post of course , has clear plastic tape where derailleur goes , a very nice frame really ... any ideas ? thanks

http://bikeforums.net/attachment.php...hmentid=442532 http://bikeforums.net/attachment.php...hmentid=442534
http://bikeforums.net/attachment.php...hmentid=442535 http://bikeforums.net/attachment.php...hmentid=442536
http://bikeforums.net/attachment.php...hmentid=442537 http://bikeforums.net/attachment.php...hmentid=442539
http://bikeforums.net/attachment.php...hmentid=442538 http://bikeforums.net/attachment.php...hmentid=442540
http://bikeforums.net/attachment.php...hmentid=442541

I'd guess it's a Trek from the early 80's.

i was thinking trek too , but theres nothing on the seat stay end caps .
did trek make some plain ones without ? and no serial number ?

ok , i went to the vintage trek site and it says all treks have trek embossed somewhere on the frame except the TX900 , which this frame is not .
so its NOT a trek ..... what the heck is it ?
maybe not as easy as i thought ..... hmmmm

Vintage Trek Gallery - Kevin Maher's 1978 Trek 530 Steel Road Bike and Another Look-alike

http://www.vintage-trek.com/TrekBrochure1982.htm the 412 could fit the bill

Another idea: could there have been damage to the rear dropouts, which prompted someone to repair and repaint, leaving the trek embossed nowhere? Also could this be a late Ishiwata/O22? At the end of the period of these models the Ishiwata was dropped.

Vintage New Belgian Superia Ishiwata 022 Steel Frame Frameset Campagnolo | eBay

bigredkevbot , thanks for the links
i looked at the trek links and like i said they all have trek on the frame somewhere
the ebay bike ive seen before and its not the same
maybe we need to start a list of manufacturers that didnt have serial numbers on their bikes
n stuff
oh and theres no indication of any repairs on this frame