The top one definitely doesn't have a perchbelly stock, that didn't start until a few years later. Perchbelly is a curve on the bottom of the buttstock. But in this last picture, the 80.2xx does look as though it has a slight perchbelly. Not as much as normal, but it varies.
I'll muddy the waters here a bit more for you. The upper one in the photo has serial numbers that match throughout. However, the bottom is a bit of a mutt and the stock number does not match the gun. The stock is 539XX which puts it at 1906 I think. Now I have to go figure out the "Perch Belly" because apparently my understanding of what it is.. isn't.
