This is an applied seal from a Bordeaux wine bottle. L. Beyfus is no doubt a bulk buyer and bottler rather than one of the chateaux (vineyards) which produced wine under their own label.
St. Julien is one of the municipalities ("communes") in the Haut-Medoc region of Bordeaux. The "1846" refers to the founding or other event in the history of St. Julien.
The bottle probably contained a blended red wine, good but not excellent.