1967, Austria. Group of 7 different, original artist's paintings by Prof. Otto Stefferl for the issue "6th Intl. Congress for Plant Protection, Vienna" showing various insects. Acrylic on cards. Non-adopted designs. Sizes (brutto) 66x147 mm each, landscape or portrait. Some printer's notes. UNIQUE ARTWORKS. (Mi #1243) (M) (Tax Method: Margin System) (Image)

1967, Austria. Original artist's painting by Prof. Otto Stefferl for the issue "6th Intl. Congress for Plant Protection, Vienna" showing "Potato Beetle". Acrylic on card with passepartout framing. Issued design. Size (netto) 281x207 mm. Some printer's notes on the reverse. UNIQUE ARTWORK. (Mi #1243) (MS) (Tax Method: Margin System) (Image)