Yes Nick, that is the same weight.
The generic description "Vasart" can be found in various literature, including auction catalogues, and much of the time that could well be correct as it was the trading name for both the "Ysart Brothers" years and the later "Vasart Ltd" period.
My own attempts to distinguish between those periods, by a) overall look and feel (such as suggested by Alan's earlier comment about similar canes in "Y" weights) and b) uv testing, may simply be a complication too far.