Also, don't just go by the pictures on GB. I saw a 6" Model 25-9 .45 Colt that had a decent price, but the pictures were awful. Here is the best one of the bunch:
The gun would go through it's sales period without anyone hitting the reserve. I was the only one bidding, and my bids were always well short of the reserve. I contacted the seller and got beautiful clear photos. After 4 cycles of me being the only bid, the seller sold it to me at my price, well under the seller's reserve. Here is what showed up at my door (6" barrel upper left):

The gun would go through it's sales period without anyone hitting the reserve. I was the only one bidding, and my bids were always well short of the reserve. I contacted the seller and got beautiful clear photos. After 4 cycles of me being the only bid, the seller sold it to me at my price, well under the seller's reserve. Here is what showed up at my door (6" barrel upper left):
