Purchased Coin Direct From Online Dealer

The post office checked on my missing packages and found nothing. I found out that my regular mail carrier has been out about three weeks because of family issues, I have been getting different temp mail carriers. I had another coin with book being delivered today that was a Xmas gift for my granddaughter. I was watching for the mail carrier and I also have a video tape of the delivery at the mailbox. Today I went to the mailbox right after delivery and there was no coin package with tracking in the mail box. The carrier was at the next door mailbox, so I approached and asked about my package with tracking that was not delivered. The carrier found the package in the truck and said, "I was going to come back and delivery the package". I do have the coin as shown in the photo below.

I sent an email to the route supervisor noting today's problems.

Our mail carrier delivers packages separately from the loose mail (envelopes, catalogs, etc.). That lightens his load walking door to door. Doesn't sound inherently dodgy to me, but your mileage may vary (especially given your recent history and the replacement carrier).