I have bought a number of these motors from different vendors. All of them are 4096. I would notice if it was 4076, a 20 step difference. My code does 4096 steps quickly then pauses for 5 seconds. It stops in the same place even after hours of running. I don't doubt your picture or you counting Stolfa. My question is this:
Why would someone design it with 4075.772 steps???