Duplicate serial numbers reports? SEPM 11.0.6

Is there a report that I can run to find machines that have duplicate serial numbers?

The guys that do our computer images, have re-imaged machines and sent them out to the field without removing the old ones from SEPM. So, I have let's say 4 machines named MJMJM50 and it's created 4 unique SEPM ID's in the console.

I'd like to remove all the duplicates and just leave the ones that are currently checking in, in the console.

Thanks