The oldest primers I have are from the mid 90's CCI's SR mag. The boxes are priced with a Majic Marker so I couldn't resell them in 2008 when I got unemployed. I sold $850 worth at wholesale to a dealer. I over doubled my money, but when cash reappeared, I restocked with Winchester pistol and Federal GM Match rifle and a few bricks of Remington 7 1/2. The last purchase of primers was Federal 205M (5 1000) 210M (10 1000) & 215M (5 1000) for $32/1000. Just before the pandemic, I did an inventory and had 68 1000 metallic primers and 12 1000 Win 209 shotshell primers.

Ivan