In the system or not that plate will save you time/effort going forward.
The CHP just issues the tag for VINs. In this case it was for a special construction vehicle. There will be no year. The DMV then will issue a registration, either plated or OHV. There won't be real information on the vehicle, and if it has been out of the system for quite awhile, there will be no records for who it was last registered too.