I had taken the buck on the right quite a few years back and 5 years later I took the one on the left in about the same spot. I'm thinking the one on the left is a descendent of the one on the right.
When the taxidermist was doing mine he was sending me pictures to see if I liked it. By the time I got to the point that I liked it I had him move the ears like 4 or 5 times.