E.R. Squibb Antique Anesthesia Mask and Can of Ether. Ether Squibb for Anesthesia Copper Protected Can. This 1/4 lb can is full. It is Made in the U.S.A. and is manufactured by E.R. Squibb & Sons New York. The top of the can is slightly bent otherwise this is in good condition considering it's age. The mask is also in good condition. As far as we are aware this dates back to 1940's era. A great collection duo for anyone in the medical profession for sure.