1) Modern obsolete currency 
Altyn (Russian алты́н, also алты́нник) is a historical Russian currency (symbol: ). The name is Tatar altı, (алты) meaning `six`, since it was worth 6 of 1/2 dengas (six halves, Russ. шесть полушек), equivalent to three kopek silver, then copper, a small value coin, or 180 — 206 copper puls. Altyn coins were min.....
a coin (three copecks).