Level 1 - RGNC4L
Level 2 - RDNC6L
Level 3 - SDND6L
Level 4 - 9DNX6L
Level 5 - 9CNX7L
Level 6 - DCNS7L
Level 7 - 5CNJ7L
Level 8 - 5HVJVX
Level 9 - 5CXJ7V
Level 10 - 582J35
Level 11 - 58VJ3X
Level 12 - 5RVJLX
Level 13 - 5H?JVC
Apple: 1687
Egg: 80 B.C.
Flag (New Indian): 1947
Flag (USA): 1969
Light Bulb: 1879
Physics Equation: 1905
Propeller: 1903
Quill Pen: 1602
Sledgehammer: 1989
Steering Wheel: 1520
Stovepipe Hat: 1862
Sword: 1192
Throne: 31 B.C.
Torch: 776 B.C.