They are great CD. Tell us more about them. I too have the same dandy characteristics but mine is expressed these days in fancy waistcoats which garment also has a practical purpose of covering up my braces (suspenders in US I think) which since the attack of galloping middle aged spread have become an essential bit of kit.
All I've been able to find out so far is that they are of Persian origin, of indeterminate age. The painting may be on bone (if old) or sime more modern material. I need to clean them so I can get a better look and figure out more.
Anything "antique" should never be cleaned or restored without prior inquiry to a qualified appraiser. Even cleansing tarnish on the silver could adversely affect their value.