take it from me- theyre not antiques- ppl still use them daily in many gyms all over the US & the rest of the world

the weights are valuable to those who need more weights/plates at their gym
you wont make a huge profit but u do need patience & room to store it until u get a buyer.

if u cant manage that, then last resort is to sell it to a scrap yard
if i was nearby, i would have taken it myself.