These are three different molds for this index. The closest bar placement is 1" with heavy blott outs, same as this one posted by Andrew Gibson [id=158189861]

Another placement measures 1 3/8" between bars.

The last one the bars are 1 7/8" apart.

Odd the ones with the widest bars have cleaner glass, the blott outs are very faint. The "2" embossed on the rear skirt for all three is in the same location to the mold lines.

Sorry color is dark, trying to show the embossing. Does anyone have any other molds? PLMK