[yanksfan09]

The 1/2 is written with a thicker blue sharpie than the numbering whereas the 2/2 looks to be in the same pen.

I've never seen an authentic one that looked quite like the one on the left. To me that looks like an attempt at an earlier version of his signature C. 1994 but they didn't get it right. the 2/2 seems more in line with his C. 2006 signature version where in Rodriguez he went into the DG loop thing in the middle. Just my opinion. Here's a factory 2006 I saw on ebay.

the 1/2 style looks a lot like forgeries I've seen on 1994 minor leagues cards sometimes in later GAI holders