Pictured above is the standard "6-Pointed Western Star" on the base of a 3-Piece Mold, Applied Top 1/6th.
A few off-colored examples shown above.
I began to look at the variations of different mold-patterns (ie. 2-Piece mold, 3-Piece mold, 4-Piece mold) and noticed what seems to be a trend....All of the examples shown from the Puce-colored example (left side) through the Olive-Amber example (right side) feature either a 2-Piece Mold OR a 3-Piece Mold. Each of them feature a recognizable, raised DOT, of ranging sizes/boldness on bottom.
Case in point: 2-Piece & 3-Piece Mold-Patterns all seem to have a raised DOT of some sort?!?! How about the rest of you guys who have some 1/6th's or even 1/5th's laying around....Do you notice any similar relationships/patterns? It makes me wonder if this could be a start in narrowing down which glass house(s) might be responsible for specific Mold-patterns or particular markings on the base.
These above examples all have smooth bottoms...NO DOTS & NO STARS of any type (ie. 4-Pointed Star, 6-Pointed Star, Fancy Star, Floral-Design Star, Ship's Steering-Wheel Star, etc.) The weird thing....Each one is a 4-Piece Mold. Hmmm....
It was somewhat difficult for me to capture each color spot-on with the artificial white light, poor surrounding light, and my "Not so Lou-esque" experience with photographing Western glass.
My rough-draft conclusion based off of the slick cylinders that I have, seems to be:
-No marking on bottom = 4-Piece Mold
-Some type of marking on bottom (DOT/STAR) = 2-Piece Mold OR 3-Piece Mold
The Jury is still out on this one folks....So check your unembossed cylinders (1/5th's or 1/6th's) and try to figure out if there are any other peculiar connections!