Hi Nev, rd 96776 is actually for a Greener and Co handle used on their baskets, the pattern reg for your sugar is Greener and Co rd95935 16/3/88 it’s shown in Jenny Thompson book identification of Victorian pressed glass.
What makes the Greener registrations interesting is that they used different registered designs for their handles on their handled baskets from around 1885 so a basket could have had two registered designs one for the handle one for the bowl pattern.
The earlier handled baskets in the 1870’s just had one registration. Mike