I used to collect those back in the late 80's and 90's. I hope this hobby doesn't go down that same path. Speculators, and "Finds" cause the values to rise and fall too much in some cases. At least with coins, you KNOW how many were made, and priced accordingly. No surprises if someone finds a roll of 1909 S VDBs, as the mintage is known. My 2 cents.