Your gun is a regular Fulton, on page 165 of my Stoeger Catalog No. 25, priced at $21.85.
When the Fulton was introduced in 1915 it had a price of $18. In 1916 Fulton Special was introduced at $25. The Fulton Special had a capped pistol grip and a bit of engraving. In my 1929 Stoeger Catalog No. 10 the Fulton is $29.00 and the Fulton Special is $35.00. By Stoeger Catalog No. 18, 1932, the Depression had taken its toll and the Fulton was down to $22.55 and the Fulton Special was $28.35. That is the last listing I have for the Fulton Special. I've also seen some Fulton Specials with the sides of the frame were "engraved?" with some wavey lines.
The Hunter Special with the L.C. Smith rotary bolt wasn't introduced until 1937.
