An interesting video to help you distinguish real coins from fakes.
And how will that help you determine the weight? :dunno:Just show it to the jewelers and they will shine it. You can also do it at home. Just buy silver shiner which comes at very cheap price. like 10 cents for 100 mg. and add shining powder and your bracelet inside it for 30 minutes and brush it with old unused toothbrush.