Clary reported the commemorative record missing from a wall in her Middleburg, Fla., home Monday. Police were scouring pawn shops and Internet auction sites for the silver-colored, vinyl record and a silver plate, The Jacksonville (Fla.) Times-Union reported.
The special disc, which signifies the sale of 1 million albums, had been inscribed by Van Zant to his daughter. Van Zant died in a 1977 plane crash along with guitarist-vocalist Steve Gaines, vocalist Cassie Gaines, assistant road manager Dean Kilpatrick and several others.
The family estimated the item was worth about $80,000 but investigators placed the value closer to $1,000, the newspaper said.
Among Lynyrd Skynyrd's hits were "Free Bird," "Sweet Home, Alabama" and "Saturday Night Special."