Because there is not a large community of collectors that collect coffee Mugs, in general regardless of who made the cup, or how it was issued it would only be worth about $10. -$20. The mug would appeal to Cincinnati Reds fans reducing the number of collectors in the market, demand, and value.
There is not a definitive value for antique red glass. There are not only differing prices for when the glass was created, but what shade of red they are, such as ruby or cranberry.
Red glass is made by adding metal oxides, such as selenium, to the glass mixture during production. These oxides absorb certain wavelengths of light, allowing only red light to pass through the glass and giving it a red hue.
The color of light that is transmitted through a piece of red glass is red.
The Invaders - 1967 Condition Red 2-1 was released on: USA: 5 September 1967
The Beautiful Blue and Red Danube - 1967 TV was released on: USA: 14 May 1967
The Red Telephone was created in 1967.
Beach Red was created in 1967.
Red Guardian was created in 1967.
Red King - Through the Looking-Glass - was created in 1871.
Red glass is made by dissolving gold in aqua regia, recovering the gold oxide thereby created, and adding the gold oxide to molten glass. Because of the gold content red glass is very expensive.
All wavelengths of other colors of visible light are absorbed, only the wavelengths of red light will pass thru the glass.
The Red Sox player of the year in 1967 was the Hall of Fame great Carl Yastrzemski.