This is my Otis line up, with mold variations and different embossing placements. Known to me, 18 variations exist. Left to right:

Square Body / With Horizontal Embossing On Raised Panel

Base Embossed / Smooth Top

Wide Base (on plastic cup)

Regular / OTIS PATENT / 1851

Narrow Ear Fisher

Wide Ear Fisher

Normal Low Embossing / PATENTED AUG.26.1851

Normal High Embossing / PATENTED AUG.26.1851

The above names were coined by LRI expert Jim Colburn, when the LR Number System is finished I'll add the coresponding LR numbers.