Two small finds:

Just looking to date and get any possible info.

1. An old Miyata 210. Serial no: I 674707 (Think it's late 70s? Dia-compe centerpulls w/suicide levers, Miyata "Cotterless Cranks" (printed on dust caps). 1024 Hi-tensile tubing. Bought it from the original owner, it's in pristine condition, not a scratch. Trying to figure if it would be worth it to at least upgrade the wheel set to alloys and/or convert to a ss city bike.

2. An old Nishiki mixte frame, "Custom Sport." Serial no: 9132095. Similar components to the Miyata (bought off of the same owner.) Also has matching Nishiki "Cotterless Cranks" with color-matching paint on the arms.

Both of these bikes have these huge steel derailleur guards; at least, that's what I think they are: huge chunk of metal that's bolted to the derailleur bolt and covers the derailleur. Ugly. Need to be removed.

Thanks if you vintage catalog holders out there have anything that helps, and Merry Christmas to any who celebrate it,

max

The Miyata 210 is circa 1980/1981, based on the serial number. The Nishiki Custom Sport was available from the mid-1970s through the mid-1980s, though the components suggest it is late 1970s or very early 1980s. The Nishiki also appears to be Taiwanese built, based on the serial number.

Both are entry level bicycles. Typically, the Miyata will be better manufactured and finished. Either would benefit from an aluminum rimmed wheelsets, but I wouldn't be spending much money just to upgrade the bicycles.

I almost certainly have the catalog for the Miyata and possibily the catalog for the Nishiki, but right now I am visiting my sister in Florida and do not have access to my reference materials. If you want, you can PM or e-mail after January 07 and I should be able to help further. Pending that, you may be able to narrow down the dates using the component date date information on the Vintage-Trek website.

thanks T-Mar. I'm in San Diego until the 4th myself. Will PM when I get back. Won't be upgrading too much, but at least the wheels.

Tough place to be stuck for the holidays.

The original custom sport came only in a men's diamond frame version, and was a very heavy all-steel Varsity-class machine. By the time your mixte was introduced, the frame had been lightened considerably, and the OEM component list had been dramatically upgraded.