1960s Mushroom in Blue/White D/O

The mushroom - with its colourful assortment of close-packed millefiori canes - has a slender stem which tapers down to a clear, notch-cut ground. The top of the blue-on-white double overlay is cut with a bevelled, 8-point star facet, surrounded by 8 elongated notch-cut side facets. (There is no signature/date cane, but judging by the type of canes and the colours, the weight was probably made in the mid to late-1960s. It came from a collection in which the majority of Modern French weights were dated between 1968 and 1970.)
The polished, concave base is a mirror image of the top facet.