Vintage Original Force Fins

[knotsofast]

I have a pair of old force fins in a weird greenish color that say "Pat Pend" on the bottom, size medium, still in good usable condition. What year are these from? How many where produced? Are they worth more than others due to age?
I guess maybe the reason they don't sell FF at most local dive shops is because they will lose their contracts with the big name gear manufacturers when their fin sales go down.
Thanks for your replies...

 

[uncleavi]

I have most pair of Force Fins so, If you ever want to go diving let me know.

 

[Bob Evans]

Knotsofast, Those greenish Force Fins were made in 1982. I was manufacturing around 200 pairs per day, in Body Gloves Hermosa Beach plant. The nice Bahama blue fades into green with time. We are replacing a heel strap for a long time customer who has a light red pair from the same batch. I just bought a steel air tank from Anacapa Divers, they carry over seven types of other name brands fins. That's cool for me since they are great folks, and need to making a living. Plus, I will need those air fills since I plan to go diving several times a month now. Come join us.