I question the decline in double issue too. I have bid on a lot of guns over the last few years, and there is no doubt in my mind that prices are rising steadily on old doubles. Maybe the increases in new ones are driving that. The number of bids in online auctions for individual items also seems to be increasing.

I keep a close watch on GunBroker particular and have noticed that over the last 6 months in particular, the numbe of collectible doubles has been declining in every auction cycle. Their normal total sales listings has been at 800-1000 every two weeks, but tha number of old doubles of any kind has dropped to the point there is little of any interest to bid on. I haven't bid on anything in the last two cycles which is unbelievable compared to the past.