Title
SAPO copper punched disk sandwiched between glassCatalog Number
102703831Type
Physical ObjectDate
Circa 1950Manufacturer
Czechoslovak Academy of SciencesPlace Manufactured
CzechoslovakiaDimensions
overall: 1/8 in x 6 3/8 in x 6 3/8 inCategory
Ephemera/otherCredit
Gift of Miro ValachLot Number
X7820.2016