Marks found on various Loetz pieces
 Rare mark used in 1898  1920s Cameo mark
 Signature on Tricolor vase
 Acid-etched oval "Czecho-Slovakia" mark used after 1918, on ball-footed candia papillon vase
 Acid Oval on 3 handle tango
Marks found on Tango vases other than Loetz
   |  Acid-etched oval mark on cobalt papillon vase
 Engraved signature on phänomen vase
 Close-up of above signature
 Acid oval mark on green tango
Acid oval on 2 handle vase
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