Colour differences on Hyper PS 6.1

JoshyS

Rookie
Being the proud owner of two HPS 6.1s this is a question that has always plagued me. There seem to be two different colour versions: One with yellow wilson signs at the 10 and 2 o'clock postions and one with grey. I actually own one of each version, with the grey one being a test racket. I was just wondering if there are any fundamental differences between the two versions.

Here are some examples of the two versions:



 

nCode747

Semi-Pro
some courtrys have diffrent colors for there racquests.

I own a wilson hyper hammer 6.6 and i like it
 
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