Type :- One Rupee 
Year :- AH 115x - RY 20 [1738]
Metal :- 91.7% Silver.
Diameter :- 21.0mm     Edge :- Plain     Alignment :-Coin
Mint :- Shahjahanabad (epithet name: Dar-ul-Khilafat)
Obverse: Auspicious coin of the fighter of infidels (Ghazi), the emperor Muhammad Shah / Saheb Qiran-e Sani / 115x. Reverse: Struck in Dar-ul-Khilafat - Shahjahanabad in the year 20 of the accession associated with prosperity.Ruler: Roshan Akhtar Mohammed Shah S/o Khujistan Akhtar (1719-1748).Mintage :- N/A. Mintage Years :-AH 1133 - 1161 (1720-1748) 

Note: Extremely Common. This coin can be of dated AH 1150 or AH 1151 with RY20.