Nope, they t'weren't marbles.
They were more wrinkly than smooth (even while growing) and had more colors.
all of Dad's generation have passed on or I could find out real quick. He'd munch them right off'n the bush (usually with a cold beer) or let 'em dry and throw 'em in the sausage grinder when we made sausage - one batch of "sohotyoudon'thavetocook" and one batch of what he called womanandkids sausage!