Little blue dish / salt cellar

Would like to figure out about how old this is? Picked it up at an estate sale over the weekend. I don’t think they even charged me for it they thought so little of it. Looks like it’s pretty old to me. They did have a couple pretty early things at the house. I bought a book published domestically in 1743. Looks like some orange/red in the base. Guessing that’s iron used in the glass making process? Pontil mark is there. The glass is a sapphire blue. There’s an unfortunate chip but the price was right. Any ideas?

 

I would peg that as Mexican from the 1950s.

Debora

 

Hi,
I agree with Debora. It is Mexican.
greg

 

Me 3

 

Thanks Deb, Greg, and Baker! Glad I didn’t pay up for it!!! The lady of the house was obsessed with blue. The amount of blue kitchenware she had was insane. Saw this while I was cashing out and tossed it on the pile. At least my book and the Dorchester Pottery I picked up definitely aren’t Mexican.