The Lewis Model replaced the earlier Crass Model hammerless Ithaca in 1901 with serial numbers beginning at 55000. The Lewis was made in all grades from the Field Grade with "Smokeless Powder Steel" barrels, through No. 1 with Twist barrels, No. 1 1/2 with Damascus barrels and No. 2 to No. 7 with increasingly finer Damascus barrels or Krupp barrels and increasingly finer engraving, stock wood and checkering. The Lewis Model was replaced by the even shorter lived Minier Model in 1906.