I would love to own a Jim Brown rookie one day but barring the most amazing deal, it will likely always remain too expensive for my collection. I want one but I can live without acquiring one. Thankfully Brown has a ton of cool cards and back in 2015 I picked up my absolute favorite card of his:
I bought it raw but recently had it slabbed for protection, getting it back in a PSA 6 (MC) holder. I will always love this card as it's a simple portrait with a stoic Brown kneeling in front of his own Cadillac.