The aircraft with the registration N210P resides in West Palm Beach according to the FAA and is listed as a T210N model. Is this the aircraft you are talking about? Seems the 210 had the plate at the base of the pilots door pillar.
https://www.cessnaflyer.org/maintena...lap-skins.html
The aircrafts flight manual should tell you the location of the data plate in Section 8, Handling, Service and Maintenance under heading "Identification Plate".