Originally Posted by
Metacortex
There are several other non-original parts on that bike in addition to the saddle. Also note that it has the smallest 21" frame, which may limit the potential market.
The original saddle wasn't a Fujita Belt. Given the missing original parts and questionable condition I'd value it at around $250, maybe a bit more if one intended on parting it out.
They were also made by Bridgestone, although those examples are much more rare.
What is not original that you can see? Toe clips missing? What else? Freewheel?