Two pottery vases - nautilus and happy fish

I think I asked about these a loooooooong time ago on the old eBay boards, but I was never able to find an ID. Just thought I'd try again.

The color of this fish is much more of the '50s & '60s style chartreuse yellow-green, than what is showing in the photos. I see these listed sometimes as McCoy, but I wasn't able to find them in any of my McCoy books. 9.75" lips-to-tail, and 5.25" high at the front edge of the rim opening.




This pretty nautilus is 7.5" high, and 4.5" wide at the base. It's heavy, thick, vitrified pottery similar to what Abingdon and Gilmer Potteries in Texas used to do. Marked "313" on the bottom, but that never helped in searches over the years. Any ideas?

 

Sorry, no advice here. But like them both.

Crazy thought - could that just maybe, be W over a W?

 

Thanks anyway. Yes, could be Ws, or Ms, or even Es, if you flip the vase the opposite direction of the 2nd pic (or 90-degrees clockwise in the third).

Like I said, just taking a chance with new eyes on the forum. You never know who will have seen what on their treasure hunts.