That other Mets script 1967-68

Was looking at a poster I have from a few years back.  SNY gave it out and it has all (through then) the yearbook covers.

What caught my eye was this Mets script that appears on the 1967 and 1968 yearbook covers.

 

Odd right?  And it is on two covers so I can easily wave it away as being specific to a yearbook design.

That’s all I have.  No theories. No commentary.  Just noticed it.  Let me know if you know any details.