1) Through public auction: This is generally the best way to maximise the price achieved either on the International Stamp Market through Grosvenor the leading stamp Auctioneer in London or, if the items are less specialised/valuable through a local auction house. (Stuart would recommend where best to sell and is in a position to negotiate better commission rates on more valuable properties).
2) By Private Treaty: This is ideal if the collection is to be sold intact and a price slightly greater than the normal market figure is required. Stuart knows most of the leading collectors and dealers who might be appropriate to approach. Commissions for this service are generally lower.
3) Outright purchase: Stuart is happy to make a cash offer if you do not wish to wait for an auction or you would prefer an immediate payment.