1 Rupee - Bhangi Misls Amritsar- Nanakshahi

G. Singh 01.07.01, Herrli 01.05.04

Saraye Amritsar Jiyo mint instead of Sri Amritsar Jiyo mint

This coin was most probably issued during the reign of Sardar Gulab Singh who reigned from 1782–1800CE (or Vikram Samvad 1838 - 1857)

Nanakshai couplet coins are named for the Persian couplet inscribed on them, which translates to: "Victory gained by the sword of Guru Gobind Singh, is a blessing from Nanak, the true Provider". 

Sikh Confederacy

The Bhangi Misl was a large and powerful Sikh sovereign state (or Misl) headquartered in Amritsar. It was founded in the early 18th century by Sardar Chhajja Singh, who was baptised into the Khalsa tradition by Banda Singh Bahadur. It was the first misl to establish a Khalsa Raj and publish Khalsa currency coins. The misl received its name "Bhangi" because Chhajja Singh and his soldiers frequently used the herbal intoxicant bhang (drink made from cannabis sativa). ["The misl held much of the western Punjab between Multan and the Hill States with the important towns of Lahore, Amritsar, Gujrat and Sialkot" *]

The Sikh Confederacy was a confederation of twelve sovereign Sikh states (each known as a Misl, derived from the Arabic word مِثْل meaning 'equal'; sometimes spelt as Misal) which rose during the 18th century in the Punjab region in the northwestern part of the Indian subcontinent.

[source Wikipedia]

[ * source: page 12, The coins of the Sikhs, Hans Herrli]