Very fine and rare Georgian brass petal base variation candlestick / candleholder made between 1750-1755 according to Michaelis in his "Old Domestic Base-Metal Candlesticks" on page 114; on this page he also discussed the rarity of signed 18th century candlesticks.  This one is stamped "IB" twice on 2 different in-curved portions of the base and these initials I think are for the brass worker John Barker, though they could be for the owner (seems unlikely to me). 

It is typical in that it has a hollow stem whose halves were seamed together.  The socket has a wide cast-in flange.  The form is balanced and lovely.It never had a push rod ejector, and the column / stem was affixed to the base by means of an earlier technique, that of peening.  The seams are very tight except for one area of the lower knop where the seamed has opened to leave a small hole.  The candlestick sits straight and flat (see photos).

On the whole this is an excellent candlestick with an excellent form.

Dimensions:
Signed, stamped, twice IB on top of 2 in-curved portions of the base.
8 1/4 inches tall
4 5/8 inches across parallel sides of base