Why does my google account show two different devices?

[Apowell43]

Have had this problem for a while.
My Samsung Galaxy 8+ model number SM-G955U is the only device I own and the only device that should be on my Google account but instead it shows two but both are a SM-G955U.
Couple weeks ago I had to do a soft factory reset when I added my google account back it showed the other device as a SM-G955U(622) which is not my phone but I cant get to view this device.
Could someone help explain how to find this device

 

[B. Diddy]

Welcome to Android Central! Where are you seeing that -- in the Recently Used Devices menu at myaccount.google.com/device-activity? Or on the Play Store website?