Spaced Concentric (PY cane)

A 3-row spaced concentric with alternating canes in each row. Surrounding the green/white complex cane in the centre are millefiori canes in shades of pale & deep-pink, white, pale-amber, green and different shades of blue. Although the colour ground appears to be opaque black - it is, in fact, a semi-translucent bluish-anthracite.
A tiny PY signature cane is set between the first and second rows at 6 o’clock in the main picture. The glass is clear and the base polished flat. (Probably Caithness period ?)