Artifact Details Title World Time Card clock Catalog Number X931.88 Type Physical object Date 1987 Manufacturer Seiko Corporation Place Manufactured Japan Identifying Numbers Serial number EK450F YJ30-4001 Dimensions 1/8 x 3 3/8 x 2 1/8 Description Digital multi-timezone quartz clock with plastic slipcover, original box and instruction booklet in English and Japanese. Category Microprocessor-based device: Credit Gift of the Seiko Corporation Lot Number X931.88