These two spool LRIs appear to be from the same mold. The one on the right has the mold line all the way down to the base. The mold line is shown here, just a little right of center of the LRI. That one measures 2 3/16" tall, while the green one on the left is just 1 1/2" tall. The 'usual' height seems to be about 1 3/4" tall. Interesting variations. Tall one purchased out of a Florida collection some years ago. Green one purchased out of New York state a few years ago.