Post COVID blue/green half swap Petris are engraved in my bedroom on my laser engraver, and feature a new interior engraving previously not available. These are the ones that will be available soon on YYE. Pre COVID blue/green half swap Petris were engraved at a business in San Mateo, CA and do not feature the enterior engraving, they were the Petris sold at PNWR 2020 just weeks before national lockdown happened.