What to do with my Collection?

[HP-Collection]

Today, when I took a closer look at the items I bought, I had to laugh:
The purchased multicase is not only in very good condition, its serial number is even exactly following my second device. Probably there are so few of them that this is almost no coincidence. The two devices are even scratched on the same side of the case in the same font with the owner - equal as well.
Do you also have two devices with following serial number?