I agree with jbtsax. Looks like some are missing the "covering" on the bottom--you know, the plastic-like wrapping around the pad that after a while may fray or have to be pulled off.
I bought a student Selmer new on Jan. 2, 2018. Practiced it over half an hour maybe 9 out of 10 days since and have had no pad problems.
With my Buffet R13 (bought Oct., 1999), it gets played once monthly and for 7 rehearsals and 7 concerts each year. One pad fell out once and I glued it back with pad cement.