That is a VERY nice set of stocks on that pistol! Of a quality not often seen! Do you know who made them?
All I have is the gun & 2 mags shows a little wear. What do I have to do to put it up for sale? and $$Welcome to the forums from the Wiregrass, Rich! Value is primarily determined by scarcity and condition. Also, in your case, how many of the accessories you still have...like the box, weights, magazines, tools, papers, etc. We don't see Model 52s on here very often and they usually sell at a premium. We need to see the gun to gauge condition. However, I'd say, if it looks like the one scoutingranch posted, you are being offered about 1/2 of what it is worth. The bible, Standard Catalog of S&W 4th Edition, says $1250 for Very Good condition. That publication is 5 years old now and values have increased substantially for many S&W guns. I would say at auction on gunbroker,com, you'd probably have dueling bidders at $1250.
Ok got it!If you mean, what do you have to do to sell it here? First, you need to find an FFL who will ship it for you for a reasonable cost. Mine charges $20 transfer fee plus actual postage. Unless you sell it face to face and depending on if you live in a free state, you will need to ship to an FFL that represents the purchaser. Then, take a lot of well lighted, sharply focused pictures of all different angles of the gun and accessories. Post it in the Classifieds forum and put a price on it...that's up to you...plus whatever you negotiate for a transfer fee plus postage and insurance.