5-colour Crown (PY Label)

From a central bubble 3 opaque orange rods alternating with 3 translucent cranberry and 6 translucent blue rods (each wrapped in a different type of white latticinio spiral) swirl over a translucent green core. The individual rods join up at a small, lightly-ground central concavity in the virtually flat, fire-polished base.
A round blue/white PY sticker covers the pontil mark. 1970s Harland period.