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1955 Diplomat (A-4) vs 1953 President (Y-3). Diplomat weight 2.36 oz and President 2.34 oz. Diplomat 24k plating. President has unique Rhodium plated handle and Nickel plated head. Both razors have same knurling pattern, razor head & blade plate upper & lower markings. Mfg. 1953-56 priced at $5.00.