Hi Mitchell,

Thank you for contacting Mearto with your appraisal inquiry.
Italian knife maker Stiletto (often associated with brands like A.G.A. Campolin and Frank Beltrame) has been producing switchblade knives since the mid-20th century. The term "INOSSIDABILE" means "STAINLESS STEEL" and Italian switchblade manufacturers began widely using stainless steel blades in the 1960s and 1970s as the material became more popular due to its corrosion resistance.

Stiletto stainless steel switchblade knives are not very rare, with many on the market at any given time. When they come up for sale at auction, they usually sell between $100 and $150. Note this will probably be less than what comparable knives might be priced in a brick-and-mortar shop, antiques show or sold on online platforms by dealers or private sellers.

Based on the photos and information provided, and subject to examination, this is:

A vintage Stiletto stainless steel switchblade knife
made in Italy, circa 1960-70
With a dark hardwood handle (olivewood, ebony, walnut or cocobolo), the stainless steel blade embossed STILETTO and INOSSIDABILE.
8-3/4 inches overall length; 4-7/8 inches closed
CONDITION: This knife appears to be in very good age-appropriate condition.
PROVENANCE: Unknown
$100-150*
*represents a fair-market value for auction purposes; retail or asking price may vary.

Please let us know if you have additional items to appraise, or questions/concerns, and thank you again for using Mearto.
~ Delia