I found some of the past decades to have pretty memorable and distinct styles -- from the 70's bell bottoms to the resurging glossy y2k aesthetic. I thought it would be interesting to feature each decade's classic style on stamps.
The more well-known decades are from the 1950's to the 2000's. We can also include those before the 50's but I think not many are familiar with them (myself included).
Below are some examples of how I picture the stamps to look like.
(they're Spotify playlist covers, I'm adding the link just to be safe :p )