New York Knife Co. of Walden, NY was the original; supplier of official Scout knives. The shield said Be Prepared. NYK had an exclusive contract with the BSA 1911- 1923. Although the May 1925 Supply Catalog offers the NYK (#1004) at a discount. Perhaps old inventories were discovered, the discount was not repeated and the #1004 pattern was not sold again. In 1923 the Hammer Brand (still NYK Co) was introduced with the etched 1st Class in an oval logo. This knife was available in the ordinary (larger) and smaller size. Hammer made official Scout knives until 1931.
New York 3 blade pocket knife New York Knife Company Pocket Knife Need image
3 5/8" long, bone handle, 4 blade   3 1/2", ebony handle 2 blade   3 5/8" bone handle, 2 blade
Earliest (official) knives 1913-1923, had a Be Prepared “banner” logo and an unusually long shackle. Unless noted, Hammer Brand knives have removeable shackles.
New York Knife Company New York Knife Company Pearl cracked New York Knife
Same as 3 except Oval logo Same as 3 except Oval logo Same as 3 except Oval logo
NewYork Knife Company knives
 
New York Knife CompanyNew York Knife Company
Hammer went out of business in 1932. Hammer used the term cap lifter to describe a bottle opener.



(to the right) - NYK/Hammer 4 blade knives all have one line on the bolster. 2 blade knives so not have lines.
 
New York Knife Company Identification
These early Boy Scout knifes made by NYK Co. seems like they ought to be official, but I cannot find them in any early catalogs. Before the BSA became incorporated (1916) many companies used the Boy Scout name to identify the pattern style. I suspect that the NY Knife Co. might have produced these early knives, 1913-1917/18 before the BSA put an end to knives with a boy scout wording. The early official knives had a Be Prepared shield, perhaps these knives were sold through NYK Co. distributors.  
 
Collecting NY Knife Co brand named Universal  
 
Four Blade official Boy Scout folding pocket knives by NYK/Universal 
1 - 4 blade, bone handle, Be Prepared shield, 3 5/8" (larger) (not shown) 1911-16
        1A. Large permanent shackle, 1B. Smaller removable shackle.

2 - 4 blade, bone handle, etched 1st Class shield, 3 1/2" long, removeable shackle.
        Patent number on awl, type 1 can opener.

3 - 4 blade, bone handle, etched 1st Class in oval shield, 3 1/2" long, removable shackle.
         Type 2 can opener and grooved awl, no patent number. A. 2 1/4" blade  B. 3" blade.

4 - Same as 3 except with pearl/cracked ice handle.
Two Blade official Boy Scout folding pocket knives by Reminton

5 - 2 blade, Be Prepared shield, ebony handle 3 1/2", 2 blades.

6 - 2 blade, Be prepared shield, bone handle, 3 1/2", 2 blades.

7 - 2 blade, Be Prepared shield, bone handle, 4 5/8" blade and bottle lifter/can opener.
This worksheet is about Antique and Vintage knives. To be “vintage” items have to be 40 years old. I’m pushing it a couple years with some of these 75th anniversary knives made in 1985. Realizing that I don’t have much intertest in modern knives, I have however included material when it came to me. 
 
Commerative KnifeCommerative Knifecommemorative knife
 
This is the 75th Anniversary commemorative knife patterned after the 1913 New York Knife Co. On the original the Be Prepared is inverted. I don’t believe that NY Knife made this knife, the company has been out of business for years. But, that’s how the tang is stamped. A code 01350 is visible on the bolster, hard to see but visible with magnification.