PP11 will have 24 (if I counted correctly) small canes in the outer ring - and it's a "large" weight, i.e. 3 inches diameter.
Your description is fit better by PP47 - a small weight (about 2 inches) with 8 outer canes (with large gaps between them) and 4 picture canes surrounding the centre cane. If 1985 the lace ground wouldn't be white, but a very light amethyst.
The design was changed each year (mine of 1993 looks quite different) - so in this sense they were limited - but no numbers given in the "complete guide".
Before you announce this weight as PP47, however, you really should post a picture, as Perthsire has produced several weights with millefiori or picture canes over a lace ground.