Jim, I once got a regular envelope like that with the chip in one half of a cardboard/mylar flip that had been taped down to a square of cereal box. Needless to say, the chip shifted, and had tape residue on it.

I also hate those corrugated, cardboard, self-sticky, mailers that coin collectors use to send coins in. Those things should be banned in all hobbies!

It's so cheap to get bubble mailers to recycle. I once threw away 3 recycle bins worth, because I just can't keep up with the amount I get.

--Mike