I buy old decals on eBay from time to time, if they aren’t yellowed and from a respectable maker like Authenticals or Stoppel. Here are two sheets from Stoppel. They must be several decades old.
Stoppel was famous (back in the nineteen-seventies) for not having any clear decal material that had to be trimmed away. One less thing to worry about–and no yellowing or silvering possible. I haven’t tested these yet, but I they look very good. I’ve bought some old ABT decals in the past. Some of them good, some of them had “stiffened” over time so as to be unusable.
It’s always nice to have some “peculiar” national markings “just in case.” It’s also nice to have some Japanese hinomaru’s (meatballs) in a color that’s found in nature. For years, “the experts” told us to get rid of the bright red hinomaru’s included with Japanese model kits. Then something changed and the bright red hinomaru’s reappeared and got brighter and brighter.
I’ll never understand the group mind.
I was doing some research and development work. I was experimenting with Badger’s Model Flex yellow and Conrail blue. Also experimented with Vallejo Metal Color.