Have you thought of Ebay? You would probably get as much on there as you would selling through an auction house. Going through an auction house can be expensive as there are plenty of fees to be paid, also with specialised items like vintage golf clubs and skis you are not guaranteed to sell a a decent price, as you need more than one collector of these particular items to be bidding in order to drive the price up, Ebay is open to a world wide market.
Check for similar items on Ebay and see how well they perform, sometimes timing can be important, patience can get you a higher price.
If you still think that the suction house is your best course of action, try Great Western Auctions
http://www.greatwesternauctions.com/at 1291 Dumbarton Road, they have regular Saturday Auctions. Mrs Alycidon will be going there May to take part in the BBC show Bargain Hunt!!