i have posted some photos of some frame details on flickr
http://www.flickr.com/photos/24583601@N08/
the bottom bracket shell reads MC 62 (oops) and 06 74
i thought that the 06 74 might have something to do with the dimensions of the bottom bracket lug but is that the serial number. Also the paint is pretty bad, i can see that some corrosion is spreading under the paint in areas and it may be best just to get it done to protect the frame.
thanks for all of the help so far.