Tandy MD-1000
The Tandy/Realistic MD-1000 was manufactured for Tandy's Radio Shack between 1989 and 1991 and may have been manufactured by Funai Electric Co. Ltd.
The MD-1000 is similar to the Funai MD-K55, especially on the rear connections of the unit, but for one exception, the "S Video" jack is missing on the location where it would have been. Both players have a plastic/adhesive covering on the rear panel, thus suspecting a "stripped" unit to save costs and covering the numerous amount of terminal holes in the rear.
The identification label at the rear has the word custom misspelled as "costom" ( "COSTOM MANUFACTURED FOR RADIO SHACK...." ).