Cloned Racquet or Different Manufacturing Plants?

[WARPWOODIE]

I have recently acquired two Prince Racquets, the Classic Aluminum (with the green throat bridge) and the Magnesium Pro, both are 110 head size that will pair up with the same models I already have. After careful inspection, I noticed some disimilarities on both racquets.

On the Classic Aluminum, I noticed that one bridge has a glossy finish where the other has a matte finish, the bridge throats have different holes, one has three and the other has four. The Label "Prince" on the bridge throat is smaller than the other, and the aluminum finish is duller than the other.

On the Magnesium Pro, one handle is shorter by a quarter of an inch than the other. The grommets seem to be better on one than the other, one having a longer sleeve, where the other has a shorter sleeve.

So, is the difference a result of cloning or were the same model racquets made in different plants? On the issue of a possible cloning...how problematic was this for the 80 era made racquets?

Thanks in advance to your replies.