Surfing Waves

hey there..my friend found an old Bilbo 9"10 longboard single fin. its obviously had a lot of wear and tear but is rideable!
very chunky and the fin has obvioulsy been glassed on quite a few times!
any collectors out there know how much roughly this nifty thing would be worth?
will post pics if interest is apparent

based on the provided description, it's not worth more than $75 (US)