WOW! that is a nice looking rifle
the color case hardening on the receiver and octagon barrel are features found on model 39 and early versions of the model 39a
the model 39 replaced the model 92 and model 97 and was produced between 1922 and 1936 when it was replaced by the current model 39a
after WWII the receiver were blued instead of color case hardened
I am having a bit of trouble with your serial number, 17235 comes up as 1887 which is way to early, prefix "H" is 1951 prefix "S" is 58 or 59, both of which would be a model 39a the lever looks like the one on my 1902 model 1897, being squared where it meets the stock, the lever on my 1946 model 39a is round like all 39a's I have seen, so perhaps it could be a commemorative model ?
what are the barrel markings? that would help identify it, whatever it turns out to be that is one awesome beautiful rifle