A dear friend requests help with those hallmarks. Any clue is highly appreciated. 1.) Head with worn numbers, maybe 61? 2.) rooster + "2": 800/1000 3.) makers mark: K (?) + heart 4.) eagle's head: small articles, till 1798 https://i.imgur.com/gTgiEBT.jpg https://i.imgur.com/DmZHlUV.jpg htt...