Folding Bikes - Value of the Katakura Porta Cycle?

We have a Silk Porta Cycle manufactured by Katakura- Tokyo, Japan, and we are planning on selling it shortly. I am interested to know how much this bike is worth? It is also known as a 1950s Japanese WWII Paratroopers Bicycle. The bicycle is in good condition from the 1960s with all original parts, 3sp, some minor scratches on the paint. See attached photos (we were not able to upload our own give file size limitations on this board, but here are some others showing the exact same bike minus a luggage rack).

Thanks to anyone who can provide info!

The value will be what the market will bear.:)

We are not selling the bike at an auction. It will probably be sold on Craigslist or in a local flyer so we will need to come up with a suitable price before proceeding. And I have no clue what that could be.

Here are a couple recently for sale on eBay...one sold low and the other didn't sell, so I guess they are not highly sought after. Of course, you might find someone who is keen on them.

http://cgi.ebay.ca/KATAKURA-PORTA-CYCLE-FOLDING-BICYCLE-OLD-BIKE-NR_W0QQitemZ250016500203QQihZ015QQcategoryZ420QQssPageNameZWDVWQQrdZ1QQcmdZViewItem

http://cgi.ebay.ca/VINTAGE-SILK-KATAKURA-PORTA-CYCLE-FOLDING-BICYCLE-BIKE_W0QQitemZ160014554948QQihZ006QQcategoryZ98084QQssPageNameZWDVWQQrdZ1QQcmdZViewItem

Thank you! I had seen the second listing on Ebay - the one where the guy starts off by advertising the bike, and somehow segways into a Jesus Sermon. :-) The first posting I had not seen. Hmmm . . . . that one didn't go for much, did it!