A great, well used, early set of blocks, early 20th c. and made by the US Embossing Company I believe with letters (on four sides, in two different styles) and animals on the two others. I of course believe one can never have too many sets of blocks, and alphabet blocks especially in order to be able to spell out all sorts of messages!
1 13/16” cubed. Well worn as evident, but in my opinion all the better for it.