I think that Terry is correct with his example of a Victor boxlock. Around the turn of the century the Victor could be either a boxlock or a sidelock. Note page 65, plate 7, in the Cogswell and Harrison book. It shows a fine cased Cogswell described as "An Extra Quality Victor 12-bore BLE with ornamental sideplates, Avant Tout ejectors and assisted opening mechanism. No. 27,251, it was completed in May 1901."

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