The product is a postcard featuring the Marin County Civic Center. This postcard would be categorized under Topographical Postcards, which are postcards that showcase various geological and natural features of a specific location. The Marin County Civic Center is likely a prominent landmark or building in the area, making it a desirable collectible for those interested in local history and architecture. The postcard serves as a visual snapshot of the civic center, making it a unique and nostalgic piece for collectors or enthusiasts of Marin County.