Large Japenese pair cased striking coach watch Circa 1815

Silver Japanese coach watch
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Very rare, large Japanese silver pair cased hour striking coach watch, circa 1815. Hinged, double train, gilt brass full plate movement with turned pillars, the back plate engraved with flowers and foliage, fusee with chain, verge escapement, plain brass three armed balance, flat balance spring and pierced and engraved gilt brass cock with blued steel end piece, striking train with going barrel and locking plate, striking on a bell. 24 Hour dial with traditional Japanese time system. Silver outer case, pierced and engraved with flowers and foliage.
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Diameter outer case: 100 mm
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Signed: No name