From Radio-Mat Slide Co. in Daytona Beach, FL: Two open packages of Radio-Mat Slides plus one glass slide. Used in a typewriter to make glass slides.
Each box measures 4.5" x 3.5" x 1". There are directions for use on the back of the box.
One box is stamped "amber"; the other box is stamped "white". Box marked "amber" has 49 pieces for making glass slides; it weighs 4.1 ounces. Box marked "white" has 15 pieces and 1 glass slide; weight of this box is 4.3 ounces.
Shipment by US Postal Service 1st Class mail..