http://www.great-glass.co.uk/glass%20notes/markd-h.htmgives dates for the two versions of the Greener lion trademark as:
1st lion TM (with lion holding a star in upper paw) – Henry Greener 1875- c 1885;
2nd lion TM (with lion holding halberd in upper paw) – Greener & Co. c 1885 – 1900.
I presume that the transition from 1st TM to 2nd TM happened when Henry Greener became Greener & Co.
So, Nick, I think it safe to assume that your sugar bowl was manufactured sometime between 1885 and 1900.
I’ve checked through my reference photos of unregistered Henry Greener & Greener & Co. designs (all with 1st or 2nd versions of the lion trademark) and have found several examples decorated with the ‘daisy and button/hobnail’ pattern (all with the 2nd lion TM, but without RD numbers) , including a clear glass creamer to match Nick’s sugar bowl (see attached photo - © 40mb), oval dishes in amber and blue glass, and a nappy or handled sweetmeat dish in blue glass (photo © leroybe51). This is the first time that I have seen a sugar bowl in this pattern, though.
I notice that the advert from the Pottery Gazette shown on page 82 of 'Lattimore' shows the items with this 'daisy and button/hobnail all having the pattern number 2006 (including the nappy or sweetmeat dish).
Fred.