I think yours could be the PV one, these cogwheels are found in several catalogues of that era and difficult to attribute, the one on the left is Sowerby 500grams with rounded top, the middle ones are similar to yours but vary in weight the Vaseline and blue ones are 600 grams, the green a whopping 700 grams all good clear quality. The smaller ones on the right are 400 grams and the glass a poorer quality.
Cheers Mike