These tiles are 4-1/4 inches by 4-1/4 inches.

These tiles are 5/16 inch thick...less just a bit.

Using my digital calipers tiles measure 4.30" wide on the self-spacing lugs and .31" thick.
Measuring on the square edge: 4.26" wide.

This color was made from the 1950's -1970's

Using an American Olean tile chart from the 1960's: Avocado #77 Crystalline

Note: These tiles have self-spacing lugs... 

These Tiles have a matte type glazed with a textured finish...called crystalline glazed by the maker.

Imprinted on back of tiles is: A O with numbers & made in USA

Please look over the pictures above and ask questions when needed. Thanks for your interest.   

Check out my eBay store for more vintage bathroom accessories, I am adding more items daily.

I have hundreds of field tiles, mudd-cap tiles, and bull-nose tiles waiting to be listed.  If you need ceramic tiles; contact us with your request and I will check to see what we have available...please be specific with exact size, shape & quantity needed. Pictures with other objects can be helpful.