I am not sure about caliber. It may be some Euro 7 mm, or US .30 sporting caliber. Beautiful and very pleasing little rifle. Smooth, minty light color stock with pistol grip. Adjustable military style rear sights.
Receiver is factory grooved to accept optical-sight mounts.
Very smooth action. Turned down bolt handle. No import markings. Very Early Lee Metford Sporting Rifle Cal. Probably, made as a special order gun for a continental or South African customer.