After several fruitless searches, words "925 scales mark" brought up some threads. An additional 925 guarantee mark applied by the maker along with the CCM international standards (scales bracketed 925) on jewelry from (yada yada) here: viewtopic.php?f=15&t=29726&p=73329&hilit=925+scales+mark#p73329
So, no Swedish State mark...not Swedish? Anchor mark...Birmingham or other place symbol? Letters in circles...maker mark, not date code?