Rare Mother Coin 母錢 Large Palace Qianlong Emperor 1768 Beijing Revenue Mint
The Qianlong Emperor
1768-1773 AD large Palace Coins, Hartill 22.244
Beijing Board of Revenue Mint
Mother coin, 母錢
Authenticity guaranteed for all items!
Reference: Hartill 22.244
Type F1, qian like a hook, Compact tong, two dots.
Weight: 6.5 grams; Size: 27 mm; Brass
Obv: Qiang Long Tong Bao
Rev: Bao Quan (The board of Revenue Mint)
“Mother Coins 母錢” in old Chinese coin making
During the Han Dynasty, Chinese mints partially solved the inconsistencies in cast coins by using bronze master moulds. Master moulds were used to prepare the clay moulds which will be used for the actual casting.
Mother coins are pressed on the wet sand in the wooden frame (first half of the mould). Rods are placed between the coins to create channels where the molten metal can flow. A second frame (second half of the mould) is placed on top and pressed tightly. This imprints the designs of the obverse and reverse of the mother coins on the sand in the frames.
Large coins, diameter over 26 mm, weight 5-7 grams
These were introduced in 1752 for use in the Palace by the guards and eunuchs. Their official weight was 1.6 qian. Their alloy was high quality brass composed of 60% copper and 40% zinc. In popular speech they were known as Gua Deng Qian (lamp hanging money) or Huang Gaizi (yellow covers).
The Qianlong Emperor 1735 – 1796 AD
The Qianlong Emperor (25 September 1711 – 7 February 1799), formerly romanized as the Chien-lung Emperor, was the sixth emperor of the Manchu-led Qing Dynasty, and the fourth Qing emperor to rule over China proper. Born as Hongli (formerly Hung-li), the fourth son of the Yongzheng Emperor, he reigned officially from 11 October 1735 to 8 February 1796.1 On 8 February, he abdicated in favor of his son, the Jiaqing Emperor – a filial act in order not to reign longer than his grandfather, the illustrious Kangxi Emperor. Despite his retirement, however, he retained ultimate power until his death in 1799. Although his early years saw the continuation of an era of prosperity in China, his final years saw troubles at home and abroad converge on the Qing Empire.