Just found this out

Since we are talking about the USPS, here is a heads up for those that never encountered this.

We all ship items that re ask for delivery confirmation (the Green tag) and we can track that number on-line. Now here is the curve I just leaned. If you ship a coin(s)and you have the delivery conformation (green tag) PLUS the insurance tag (over $200.00 Blue)

make sure you get not only the Blue Insurance Tag but the Green Tag as well because if you don't, you CANNOT track the package with the I.D. Number from the Blue Tag on line. Last week I shipped a coin back to NGC for a reholder and the guy at the Post Office said I didn't need the Green Tag that I could track using the Blue Tag I.D.

The system on line would not recognize the I.D. number of the Blue Tag.

Make sure you get both !!!