eBay provides possibly the widest marketplace for your LBC. And, the beauty of eBay is that it's an auction: you may set the reserve as high as you wish in order to sell the car at your optimal price. If your reserve is not met, the ad cost is minimal and you've lost practically nothing.
Of course, the trick is to set the reserve low enough to encourage competitive bidding. But if you have good documentation (be sure to compose a compact, but highly descriptive narrative in your ad), it significantly adds to the marketability of the car.
I've found that serious bidders absolutely LOVE documentation on eBay and elsewhere. As such, I document every, little detail: fuel mileage; retain all purchase and repair receipts; photos of major mods/projects, etc. I've also had the mechanic who installed a major part (overdrive) to act as a reference for buyers. Many professional mechanics will do so free of charge. This can be highly impressive to potential buyers.
Also, eBay is generally less expensive than the premier antique auto magazines (i.e., if the car doesn't sell on eBay).
I love eBay. I've bought and sold a number of LBCs, personal cars, motocycles and tons of parts there. Never a problem, not one. And, I received better than retail market value every time. In one instance with a GT6, a LOT more than market value!
Nothing to lose on eBay, if you research and do it correctly. /bcforum/images/%%GRAEMLIN_URL%%/cheers.gif