Property:PostcardType
From International Robin Hood Bibliography
Text Art Cinematographical Festival Humorous Juvenile Glamour Theatre Topographical
{ "type": "PROPERTY_CONSTRAINT_SCHEMA", "constraints": { "type_constraint": "_txt", "allowed_values": [ "Art", "Cinematographical", "Festival", "Humorous", "Juvenile", "Glamour", "Theatre", "Topographical" ] } }