Transition labels fall off all the time (except for TRLP-1, Jazz in a Stable which has "normal" deep-groove labels). I think they glued them on in some sort of "mom and pop" operation and over the years they just fall off. I once owned a copy of "Jazz Advance" with NO labels!!
I understand that! I was asking a question.
I got it on ebay about a year or so ago . . .
I was asking the question 'cause I sold a copy (missing the B side label) about 10 years ago. I got something like $1000 for it. The pressing was as close to mint as a Transition could be.