Selmer only model. Introduced 1953/4. Withdrawn 1972. Electric version introduced 1957 with single pickup only. Thinline electric introduced 1959. Venetian cutaway electric introduced 1966. Numerous headstock style changes. Maple top and slightly flamed laminated maple back and side. 5 sets of triple dot markers. 'Compensator tailpiece always used. European similar guitar model - 455. Many Senators survive mostly in private collections.