I have in my possession a silver spoon with unknown markings. This spoon was found in Russia during the 1960's, but I believe dates much further back prior to the Revolution, and is possibly not of Russian origin as well. On the back there is a "J". There are two markings on the front. There is a marking with a chalice with an "I" to the right, and below the characters "NPA". The other marking seems to be "24°". Any help with the identification would be greatly appreciated.