The photo, anyway (lens distortion, maybe) seems to show that the shank face is angled down a half degree or so from the center axis of the shank, making the stem "droop."
If you sight down the side of the shank from the bowl end, gun-barrel-style, is the button centered?
Also, to my eye, the stem itself looks about 3/8" to 1/2" too short.
Finally, in the fourth pic down, the button seems "twisted" to the left. Simply stem insertion misalignment, or mis-cut? Inquiring minds want to know.
The rear of the bowl contour and shank "dwell time sag" things have already been covered.
Nice conservative/classical color and finish. Like a brown-tinted Comoy's Blue Riband.

UFOs must be real. There's no other explanation for cats.