Marked Bm Lion Good Solid Sterling Silver Cream Jug Pitcher 157 G 5.6oz 250

This is a good solid sterling silver cream jug /pitcher. It is marked STERLING BM with a lions profile between the letters and a number 250. Any help would be greatly appreciated. It weights about 157-158 grams or 5.6oz on a digital postal scale (give or take).

I have not polished it and will leave that to the new owner. No dents dings or monogram.