title was "info request", but then you ask "any advise" in the post.
As to info, your Stevens 44.5 Ideal aka 44 1/2 Ideal was an improved action design of the original 44 Stevens. The 44 was introduced in 1894 and made up until 1916? and the 44.5 was introduced in 1903 and discontinued in 1916. Original 44 Ideal was chambered in nine different cartridges from a 22 LR to the 44-40. Seem to recall reading somewhere, Stevens didn't make the larger cartridge 44 Ideal rifles too long as its original action design was too weak for them.....actions became loose. Know the original action in the 44 was described as a rolling block design and the 44.5 as a falling block design. Mind you, in 1932 Stevens introduced the Walnut Hill series of target rifles that were made only for 22 short, LR, 22 Hornet, 22 WMR, 25RF. Various models of Walnut Hill were made from 1932 to 1947. The Walnut Hill actions were similar in design to the earlier 44.5 actions, but were capable of handling higher pressures than the earlier rifles. I have no idea what your numbers 28-30-120 represent. I own a 22 LR model 44 Stevens. Some previous owner of the rifle had its bore resleeved by Parker in England...barrel has british proof marks on the barrel and Parker stamped on the muzzle.
As to any advise, well it you decide to sell it, you should get some decent money for it. The Walnut Hills are the most valuable, then the 44.5 Ideal and then the 44 Ideals.