I'm not sure where you are located but I'm gonna guess somewhere on the east coast. Maybe new England area. I say this because I've found that towns established way earlier than 1830s tend to produce silver blobs like you have . At one point, it was much easier to get silver than lead. Therefore it was used for nearly everything like spoons, bowls, dishes and other things. When it became broken or too worn it'd be remelted to make a new item. It was also currency. People made their own back then. They went by the weight, not coin. On the back side of your piece I can see the assay marks and I'd bet that the weight of that blob is on there also. People don't realize that pure silver (100%) is maluable like a piece of paper. Occasionally you'll find old silver with degradation spots that look like it's rotting away. Those spots are from the other alloys that were added to strengthen the silver or to cheat the scale. The place I live was founded around 1750 and I find the same kind of silver blobs. I just save them for a rainy day.