Four Switchblade Knives, A) Serpent head case 3 1/4" long (closed) comes with necklace chain with discs, probably Indian 20thC. B) Scythe blade with bone handled case (small piece missing) 10 1/8" long open, 19th/20thC. C) Button activated "Latama Italy" marked on blade possibly horn handle 7 3/4" long open 20thC. D) 13 3/4" long open with nickel silver and wood case, inlaid disc missing, 19th/20thC, mark "FS" on blade.