Your J Glass weight looks fine to me. The base colour, signature cane and the lampwork flowers all tie up with regular work from John Deacons.
The design is shown in the 1978 catalogue, as illustrated in John Simmonds' book, Paperweights From Great Britain 1930-2000.
I'm not sure which of the designs it is, in textual terms, as there are the following, all of which could possibly relate to this weight:
J06 - Spray of Primroses
J07 - Simple Bouquet
J09 - Complex Bouquet
A collector is in contact with John Deacons in an attempt to make up a full listing of the J weights with their images. The problem has been that the details for these has become lost over the years. Even John Simmonds' book only lists certain of the J weights as, for example, "1979 J28 to 39 issued soley to U.S.A."