Thanks for that info; I'll put the .38 box aside with a pre-war 4th Model Target that I have to make a period-correct display.
I'm guessing that the primers have no collector value. I may load some of the LR primers up in the next few weeks to help break in a Model 700 .308 that I picked up recently in a deal; the magnum primers I'll save for my .300 H&H.
RWJ
Just opened one box of the 9 1/2 primers, and they appear to be of the more modern, "flat" type primers, as opposed to the more rounded or "domed" type I think you are referring to; the .38 rounds in the yellow/blue box pictured appear to be the "rounded" type you mention. The primers are in wooden trays.I will repeat one of the earlier comments about rounded primer cups. I remember back in the 1960s-70s that some primers had rounded (convex) bases, and required a concave primer seating punch to seat properly. I still have the original sets of concave and flat primer (both rifle and pistol) punches which came with my Lyman single-stage press from the late 1960s. I haven't seen any rounded-base primers in a long time. Your primers are very likely still good. I still have lots of primers from the 1970s which are.
I started reloading in 1973 and I bought red box Remington primers new. If I recall correctly by that time the blue and yellow Winchester cartridge boxes were old stock that had been superseded by yellow and red boxes. The Remington primers in the tan colored outer box were made before then. I'll bet the primes in that box have very rounded corners. I hope that helps a little.
Assuming they were all stored in a dry house they should all be good to use.