2010 Mexican currency – 50 and 100 pesos.

Low mintage Jefferson nickels -- 1938-S, 1941-S and 1960.

Left: cylindrical printing device for engravings, possibly currency? (Notice coin in design.)
Left center: Fawman Draper Underwood & Co. forgery detection sheet with various banknote engravings.
Right center: "Uncommon Cents" elongated cents, starting with 1892 Columbian Exposition.
Right: 2010 Sacagawea dollar reverse.