Hi ,
here is a stab in the dark which may or may not be completely bonkers , I have seen similar coloured glasses from the early 20thc ,though they could stand on a flat ground base,and they were marked in the same way to represent the contents and cost , ie (W)hisky 3D 3 old pence, i have also seen them marked for 1 and 2 old pennies W1d W2d ,maybe this is a coaching type variety ,handed to people in carriages or similar on a brief stop so no need for it to stand,I have also seen them marked with G presumably for gin and with the same 1, 2 and 3 p mark
cheers ,
Peter.