bowl - a 1956 gift - any ideas?

I was given a pair of these pretty little bowls in 1956 as a gift. They are about 4 1/2" across. I've always wondered about them, see no marks. Now I can only locate one of them which makes me wonder if I didn't give one to a daughter. Could they be Italian? If someone can tell me anything, it would be appreciated.

 

Beverly. Look closely at the bottom and see if you can see any markings on it.
I have seen these before, but can't remember who made them.

 

Fostoria Seascape?

 

I believe that is it INH. Here is an older thread about it! Good Work! you are amazing!

https://www.antiquers.com/threads/blue-opalescent-bowl-fostoria-seascape.28190/

 

Is difficult to judge the shape and depth for me from the photos, but maybe.

 

I looked very carefully, see nothing.

 

https://www.replacements.com/crystal-fostoria-seascape-blue/c/26285

 

Wow!! That sure brought a smile to my face!!! Always wondered what it was as it is very pretty. Thank you so very much!!!!