http://cgi.ebay.com.au/FIN-SOLID-STAINLESS-STEEL-SAILBOARD-FIN_W0QQitemZ270438966882QQcmdZViewItemQQptZAU_Sport_Surfing?hash=item3ef76b2662&_trksid=p3286.c0.m14
Were these a production item?
How much would it weigh, and how would that affect a modern board's performance?
If you got it for 5 bucks, would it be worth more as scrap?
I have never seen nor heard of one. That is weird.
Elliptical slalom fins for US boxes were last common about mid 1990's?
perhaps it is a normal glass fin that just happens to be painted silver, but the seller doesn't know what it is?
There was a guy in Lennox Head that used to have a steel fin. That was sometime in the mid 90's. George Greenough was making a bit of crazy looking stuff at the time and I think he influenced a few of the locals. There was a fair bit of weird home made stuff around that time.
Was good to see.
When I lived in Wollongong I was friends with a bloke who worked at BHP in the casting section. He made windsurfer fins like that one.
Seen a few using them on the sunny coast in the 90's. Never ssen them since!!!
Also seen solid aluminium fins too, for the price of one you could buy 3 glass fins.