bearing in mind the resolution is quite different, stand out tells in the second item are:
1. Lack of definition, poor strike (loads of issues).
2. Angle of the collar under the beard
3. Flat angle of beard under the chin (neckbeard) vs the arc on the first item
3. Tone - copper seems to underlying metal
It would be better to compare the two images in same resolution with same lighting, same camera.
1st one looks like the one I have
It is a tempting piece to fake, given the high premium
On really good ones you can see the nips