Todd, I can answer that one for you. Coquilles don't pop up very often. After a lull, I saw 3 or 4 in a relatively short span 2 or 3 years ago, but none since. While a few years ago one could be had for around $300, prices are climbing a bit now. Right now I would judge the market to be around $400-$500, depending on condition, having original box and COA, and country of origin. Unlike most pieces on the market these days, flag # may also be a determining factor in pricing.