The Gamsters were made in Spain for CVA (conneticut valley arms) I believe Traditions has picked up the line now but has changed the name. As for the value, The best way to determine actual value is to search the online auctions, such as www.gunbroker.com and www.auctionarms.com or even www.proxibid.com enter your details in the search and see what has SOLD and for how much. if there is nothing current try the archives of past sales of items sold. Don't forget condition has allot to do with value, so compare apples to apples.
More information is needed.
black powder forces the stars out and ignites them.
Black powder is made up of potassium nitrate, charcoal and sulfur in the ratio 75:15:10. These components are integrated finely into each other.
Ultraviolet Light Sensitive Phosphorus Powder.
make should be stamped on pistol
BLACK powder is a mixture of charcoal, sulfur, and saltpetre, with other things added to keep it from clumping, improve water resistance, etc.SMOKELESS powder (modern gunpowder) is based on nitroglycerin and nitrocellulose, with other additives.
H414 powder is made by Hodgdon Powder Company.
baking powder
Somewhat; it depends. It grisly will get you going and perform better, but it depends on how long the game lasts. If it ends up lasting more than 2 hours, don't use it. Black powder makes you crash effectively and fast.
The only US maker is GOEX formerly Dupont, There are some imported brands KIK and Swiss on the market also
Aluminium Oxide powder and Sodium Silicate Powder makes Desiccant.