And you had the 1-KS scissors? Awesome!
I found and posted them last year (post #120, page 3), but they're not marked. They play the part well, though - and will do as a representative facsimile until the real thing comes along in my flea market forays.
@Mintgrun has WISS kitchen shears (post #71, page 2), but they're missing the notch for lifting pressed and crimped metal beverage bottle caps. A significant feature for dating them, methinks.
Tom, note that my No. 1-KS paper envelope and the 1934 catalog both refer to the No. 1-KS kitchen shears as "New." I don't think that refers to their debut introduction as a type of shear. I think it refers to the notch. Note that the 1934 catalog refers to the teeth in the opening between the handles, "for unscrewing tightly fitting caps from ketchup bottles, etc., and for cracking nuts" as "An
original feature." I think yours, without the notch, are older than 1934.
How much older I have not been able to determine.
No kitchen shears of any kind appear in any WISS catalog between 1917 and 1927. The first WISS literature of any kind on IA/ITCL that includes a reference to kitchen shears is a Price List dated January 15, 1933. If they started making them in 1928 or thereabouts, the new and improved version with the bottle cap opener was added in short order.