After their expulsion from Malta by Napoleon, the Military Order of Malta came under the protection of Czar Paul I in 1798 and elected him Grand Master. After Paul's assassination in 1801, his son, Czar Alexander I, appears to have rescinded the protection his father granted. Thereafter, things get murky and, despite Alexander's attitude, some of the so-called false St John's orders claim their legitimacy from Czar Paul's original act of benevolence. I have tried to summarise a very complicated situation in too few sentences, so more can be learnt here (scroll down to the heading 'After 1789'), http://www.heraldica.org/topics/orders/ordmalta.htm I suspect, therefore, this lapel-badge might be associated with one of the 'Russian' Orders of St John - and interesting it is too, as a result.