Thank you so much for all your effort and work sorting out and illustrating all the weights mentioned, Wuff!
Now, the weight I was referring to (in the same shop as I got the Damson fountain) as Harlequin, which is written on the base of the weight, IS Pierrot.
It must have the wrong name written on it. It is absolutely NOT Harlequin, it IS Pierrot.
If I can get out to the shop again in the nearish future and the weight is still there, I will take a picture if the shopkeeper will let me. I think it's likely he will.