Three Great Seal Buttons and a 1950s Boy Scouts Neckerchief

[JSM1986]

HI...I hit up an old park that dates back to the early 1900s. I searched for about an hour and found all three of these buttons and a neckerchief in a 10x10 spot. The neckerchief was made in 1950 and says strengthen the arm of liberty One button has no writing on the back. One says Waterbury button co. conn, and the last one says art metal works Newark NJ. Does any know the approximate age? I think there ww2 era.ve done a little research and I found the Army changed to the Great Seal button in 1902. So it may be older. Sorry for the crappy picture all I have for a camera right now is a 2mp on a cheap go phone.