Initially, it appears to be B and a smaller upper case E, then a faint I or L following. The E being upper case, but shorter is key to discerning the maker, as it took quite a while to do so. The full maker's mark is I.B E LL and is listed in Grimwade on page 258, Figure 3624 in the Unregistered Marks Section. For the advanced collector of Georgian silver focused upon obscure London work shops. This 1760 British sterling acorn finial coffee pot is 10 inches tall. And it weighs 24 1/2 standard ounces.
Hand carved handle, secure, appears to be original. The item "English Sterling Coffee Pot 1760 Joseph Bell II" is in sale since Saturday, May 9, 2020. This item is in the category "Antiques\Silver\Sterling Silver (.925)\Tea/Coffee Pots & Sets".
The seller is "supershrink" and is located in Supply, North Carolina. This item can be shipped worldwide.