An original and a look-alike. On the right, a Stanley #122 Liberty Bell plane made in 1876. On the left, an Ohio Tool Company knock-off #0122 made circa 1894. The year 1894 was busy. The Stanley patent on the #122 expired and Ohio Tool merged with Auburn (NY) Tool Company.
Ohio Tool made knock-offs of many Stanley tools, prefixing the Stanley model numbers with a zero. The Ohio #0122 is a drop-dead copy of the #122, except for the lever cap logo and lever connection to the cutter, which is very thick and tapered. Note the Ohio red japanning.