Elgersburg Rare Mark Cup

This is a fun mug/cup with a rare mark made by Elgersburg in the beginning of the 19th century right around when they started their business. Elgersburg was founded around 1806 by E &FC Arnoldi with the addition of Ludwig Droesse who made porcelain at Wallendorf. They made earthenware and porcelain the latter was supposedly not done until 1829. This cup seems to be some sort of celadon colored porcelain - it has a slight translucency and rings like porcelain though it certainly lacks the usual whiteness. Might be an early experimental piece? Either way it is superb with a raised relief scen of Hercules with his club and a snake going up the club. Gold twigs on either side with some smaller ones scattered throughout the other area. Gold trim to top, bottom and handle. The piece is in superb condition withjust a bit of wear to the gold trim. The best and most interesting part is the mark on the underside which I could not find in any reference book or anywhere else for that matter - an impressed ELGERSBURG. The cup is superb but the mark makes it a true rarity! The piece is 3.25 inches tall and 3 inches in diameter. Please email me for more information or photos.