pairpoint mfg co qaudruple plate 1830

i found these in my grand mothers basement after she passed away several years ago im hoping to find out what there worth there are 3 piec. The big pitcher is 8in weighs a little over aprox.16 oz and has a [P]inside a triangular shape on bottom with 1830 pairpoint logo quadruple plated The second piece aprox 4 in weighing 7.5 oz with the same pairpoint logo [P] in the center quad 1627. Third one is 3 in weighing aprox 9 oz.21 grams i830 on it.