:shock: What a fascinating weight, Ray! :shock:
The 'button' of canes does appear to be quite small, and the pushed-in sides and top do nothing to enlarge it - which I thought was the usual purpose of the lens effect of a round weight! - but rather the reverse, as you say :?
I have never seen another weight like it! Do you think it might have been a 'sort-of experimental' design?
Leni