LOT 13 ANTIQUE VINTAGE SKELETON KEYS unique notches solid barrel Sargent Lever

Amazing lot of ornate handles very heavy thick skeleton keys with unique notches at the end - these are larger sizes so probably for doors or trunks  2 1/2" to 3 1/2" long

one that looks like copper is marked "36" on notched section
a flat handled one has a faint patent mark mayve 1880
1 marked "LEVER" "2"
1 marked "Sargent" "45A"
1 marked with a "0" and "1"