American. 1920s. Purportedly from Crystal Beach Amusement Park. Marked, "Edwards Grip Tester - Patented - Edwards Novelty Co - Fort Worth Texas" front plate. Marked, "Test Your Grip Daily" dial. 11.5" x 11" x 9.25". Coin mechanism currently disabled, otherwise functioning. Nickel plated brass bezel exhibits heavy surface loss. Repainted. Includes original key. Est. $200 - 300. CODE-COOP