Let's have some card fun! We all have our interests that run far afield from mainstream issues. What obscure little issue piques your collecting interest? I will start with these:
1946 Sports Exchange Trading Post Pin-Ups. One per issue, ran for several months, then were replaced by the for-sale W602-W603:
I like them because they are very early postwar, obscure/rare and have images that are not on other cards as far as I can tell.