I am sure glad you posted. I personally have never had a problem with having purchased over a thousand strikes. I make sure to sandwich my send strikes in between a folded over piece of cardboard and put into a bubblewrap envelope. I have always thought maybe the Postal peoples curiosity might be aroused from something that felt like a round silver dollar or the sort. This method makes it look like a pretty dull envelope.Only theft I have been 100% certain of was 3 envelopes with payments inside had their self sticky stamps removed at the Post Office. Small chance maybe they were peeled off by machinery ,but, 3 on the same day ?? Always report theft to the PO so at least they might make employes think twice anyway.