Yes, posting a diameter and weight is always a good idea, and speeds identification. And yes, the Jhar tree makes Jaipur likely. Browsing through Jaipur coins in Krause's "South Asian Coins and Paper Money" this one appears to match ½ paisa of Man Singh II and George VI, KM # 176, year 22 or 23 (1948 or 1949). There are also several examples in Zeno, such as this one
https://www.zeno.ru/showphoto.php?photo=120064
https://www.zeno.ru/showphoto.php?photo=120064





















