Old silver Priest Cross

Thanks in advance. We tried to take the best possible picture of the mark. However it says that the pixels are too high. The Mark is a B inside of a shield and has 4 pillars over the shield with a pointed roof. Next to it, it is too hard to decipher the word or name. There are 4 letters. A capitol S the next 2 we cannot make out & then it looks like a capitol R. I would like to post the pictures but we don’t know how. The width is 2.5 inchest and the length is 3.75 inches long with a Garnet stone in the middle. We think it may be an Old Priest Cross but not sure where it came from or when it was made. Thanks.