Seeing an Akro Popeye - 5, a Vitro Tri-light Helmet -8, Akro Royal patch? row 2-6, possible Akro Snak 2-5, possible Master Sunburst 2-2,3-1...Akro/Ravenswood... If mint, near mint condition, a great buy.
Here is a guide for determining who made your 7/8 marble:
wvrons
Posted Tuesday at 03:31 PM
Machine made 7/8 inch swirls as standard production leaves out MFC, Akro and Marble King. The Vitro 7/8 swirls are mistakes.
Peltier
Alley
Jabo
Vacor
So 7/8 inch swirls are almost always down fast to only four companies . Identifications can be by eliminations. Most of the 7/8 inch Peltier swirls are easy to Id. So that is now down to three companies. Vacor 7/8 usually has orange peel and roll mark, super bright colors. So that is down to Alley and Jabo. Very few 7/8 Alleys will glow. Elimination.
Original post:
That is really an excellent documentation of the process. I would only take question of the use of the colors "blended". It's important to know that glass does not get mixed with other glass to form a new color. You don't mix pigments like with paint. Each color is created specifically with specific chemicals. You can find situations with translucent or thin glass where one glass is lying on the top of another. This arrangement of glass can cause a color that is unique but it is not a blended color.
Contract run. Briefly it's where a group of folks got together and invested in a run of marbles. They then divided up the marbles based on the percentage of their investment against the total cost.