First, not sure what it was before someone put a hole in it, but it seems to read GVLIELMUS so a William III something? 10.6 suggests a(n unofficial) half-guinea coin weight. The reverse might have a crown design, but I can't see any other mark of value. A bit under 4g in weight maybe?
Second appears to have the crest of the East India Company. If it's about 2cm across possibly a Bombay 2 pice from 1772 (one year issue) KM#189 Maybe?
Last ... Indian subcontinent/colonies I'm guessing.