day date quartz? worth it?

[RolexADreal]

Folks, been offered by a trusted grey dealer a mid 80's yellowgold daydate quartz. I'm aware it was fashionable in that era... Pricewise it's a deal, paying just for the gold! Wondering: is the movement running smoothly like an automatic or it's more tic-tac like a swatch? should i pull the trigger? 5000$ equivalents!