hey the 583 means 585 in soviet era wasn't such hallmark as 585 the left hallmark means that this ring was made in .4 (1984 year) in leningrad jewelery fabrique.
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More Information Requested by: Pete
Hi Ferry thanks for dropping by. Is each mark on two separate rings? Left mark on one gold ring, right mark on second gold ring?
The second mark looks like the country mark for Russia. Pete
