Looks like your might be WWI. The Great seal was introduced in 1902, but was made for many years after.
1- SCOVILL MF'G CO WATERBURY (back ungilted) WWI (1850-1865 backmark)
2- SCOVILL MF'G CO WATERBURY WWI (1850-1865 backmark)
3- SCOVILL MF'G CO. * WATERBURY * 1902-1918 (1870s-? backmark)
4- SCOVILL MF'G CO. WATERBURY CT. WWI (1870s-? backmark)
5- SCOVILL M'FG CO. WATERBURY (ring of dots) 1902 (1860-1880 backmark)
6- WATERBURY BUTTON CO. * 1849-1965
7- WATERBURY BUTTON CO. *CONN.* pre 1965
8- WATERBURY COS INC CONN post 1965
9- W W W W (waterbury) modern
10- W.B. CO.
11- CITY BUTTON WORKS - N.Y.- WWI
12- CITY BUTTON WORKS- NEW YORK- 1877-1923
13- US PRODUCTS CORP
14- R. LIEBMANN MFG CO WWI
15 R. LIEBMANN MFG. CO.-NEWARK NJ-
16- R.L. MFG Co Newark N.J.
17- THE AUSTIN CO. PROVIDENCE R.I.
18- HORSTMANN *** PHILA *** 1893-1935
19- ARNSTEIN SIMON & CO. * S.F. * WWI
20- N.S. MEYERS * NEW YORK * 1906-2000 (in business in NY)
21- AMERICAN BUTTON CO. *NEWARK N.J.* 1901-1920
22- AM. BUTTON CO *NEWARK, N.J.* 1902-1917
23- AMERICAN EMBLEM CO. UTICA N.Y. WWI
24- C KENYON CO. NEW YORK WWI- 1930
25- UNIQUE ART MFG CO. NEWARK, N. J.
26- ART METAL WORKS INC -NEWARK, N.J.- 1900-1930 approx.
27- METAL SPECIALTIES Co. ATTLESBURG, MASS. 1940-1945 (painted black)
28- CHAS. FISCHER SPG. CO. NEW YORK WWII?
29- * SUPERIOR QUALITY *
30- GREENWOOD CO * DETROIT MICH *
31- COL BUT WKS RUTHERFORD N.J. WWI
32- COLUMBIA BUTTON WKS*RUTHERFORD,N.J.* WWI
33- NEW YORK BUTTON WORKS WWI (found in France)
34- S & J WATERBURY CT. WWI (found in France)
35- STEELE & JOHNSON * WATERBURY CT * WWI (found in France)
36- JEWELERS PRODUCTS CORP. PROV. R.I. WWI (found in France)
37- SUPREME 172 QUALITY
38- REX PRODUCTS CORP * NEW ROCHELLE, N.Y. * 1902-WWII
39- D. EVANS & CO. * NO. ATTLEBORO, MASS. 1848-1945
40- D. EVANS & CO. N.A. WWI (found in France)
41- D. EVANS & CO ATTLEBORO FALLS WWI