Pair of narrow-necked (or tulip-shaped) vases, 1970s

Pair of hand-blown glass vases in a brilliant orange-red color, with a black rim around the top and a clear rim around the base. In a Pop Art style, they resemble Tango Glass creations by Loetz or Murano glass, but are unsigned. The color is extraordinary. They are in perfect condition except for a small chip on the base near the pontil mark (not visible) and a very slight imperfection in the glass on the corolla (original, see photo). Height 25 cm. Base diameter 9 cm. The price is for the pair.