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One could argue that there has been more than one Japanese Mule, so the total number produced is above their minimum order requirement. Same idea with the Kopa series. Only 600 pieces of each handle material, but 9600 total Kopas. Which is not to say whoever you're referring to was wrong about the Caly 3.5, since it could be viewed as just a variant of the G-10/VG-10 version.Since that time the Japanese Mules at least have been produced in smaller quantities.
Paul,Sprint Runs of models made in Japan are normally between 1200 and 1500 pieces.