This looks like an unissued stamp put out in 1915. According to Scott's, "Nine values commemorating the Guiqui-La Paz railroad were printed in 1915 but never issued. Typographed forgeries exist."
The image of one 2c stamp is shown, same border but different picture in the frame. No other info I can see is given. I can't find this stamp anywhere else in the catalogue.
Perhaps, and I'm just guessing, the top rougher looking stamp is a forgery while the bottom better quality stamp is one of the unissued?
Here's the listing in Scott's