How does the finish on the new matt black ones stand up? I'm not sure when they started doing the matt finish so don't know if they have been out long enough to really tell. I'm wondering if they switched to a different finish as the shiny finish can corrode over time.

My Cometa 300 is the first airgun I bought in 2000 and the blueing on that is still perfect, yet the Beretta I bought in 2004 is tarnished. I have used the Cometa even fewer times and just wiped it down with 3-in-1 before storage, just like the Beretta. I wonder if it is something to do with the foam case?

Meh, it does still look great. Has a sort of weathered patina that makes it look more realistic.