From the description of the backs I'm certain that this is a reprint on plastic or plastic-y cardstock of the so-called "Thunder Bay" deck, which is based on a special edition of the Conver by Camoin published in 1960.
The backs feature dark blue line-drawn swords through crowns, big cups, raindrops, fire, flowers and vines, suns and dolphins. And on the pip cards, a tiny triangle to indicate which end is up.
Mine is printed on standard white cardstock. I trimmed around the pale yellowish edge of the original card borders. Trimming is a little uneven, as the cards would have been way back when. Sulis trimmed hers, too, as I recall.
A nice deck. Search "Thunder Bay" for more discussion in the forum.