There are many kinds of copper yuan mixing, including variety mixing, province mixing, and new and old face back mixing. The so-called "mixing of the old and new faces" of the copper dollar is actually the "mixing" of the back or back of the new and old versions of the face when the copper dollar is produced. The variety mix is either a mix of old and new molds, or a mix of molds of the same period, and a province mix and match is a mix of different provinces.
In the Qing Dynasty, the management of the copper yuan factory, because of its huge production volume, as well as the lack of supervision and other reasons, is far less strict than the production management of silver coins, and the use of copper yuan molds in the mint is mostly in a saturated state and may not be abandoned. When the copper dollar is alternated between the old and new molds, the mint will also because the "clearance" of the old mold has not been made, or the clearance of the old version is not thorough, resulting in the mixing of part of the old mold or the back of the mold with the new mold (in fact, we should also understand here that the new coinage year should also have the situation that the old mold face back text continues to be used), so the so-called "new and old face back mixing" of the copper dollar, which is also one of the main reasons for the mixing of copper dollars seen so far.
In the same version mixing, this is a human error, of course, it does not rule out the short-term substitution caused by insufficient molds and drama casting. The province mix comes from the creation of the agent. For details, please see another article in this *** - dry goods! How to produce copper element mixing?
The phenomenon of copper dollar mixing is not uncommon, which is different from the norms of other coin collections, which is also one of the great pleasures of our copper dollar collection, which not only provides a more colorful collector's variety, but also has a more unique collection pleasure, and can also reflect the trajectory of the evolution of copper dollar varieties.
In fact, many copper yuan bureau has a new mold has arrived, but also continue to use the old mold for a long time, which can be seen in some multi-product mixing, the old mold is saturated and then abandoned or directly reused for carving, is not uncommon.
At the end of the Qing Dynasty, the emperor or the change of the dry branch, generally have to import a new mold to recast the copper yuan, so although most of the provincial bureaus will clear the old mold, because the execution of the copper yuan bureau at that time was high and low, which also determines the number of copper dollars mixed in each province.
For example, the number of "dry branch mixing" of the central Guangdong Daqing copper coins is quite small, and they are all rare honorary products, which is the good management of the Guangdong Copper Yuan Bureau and the effective management of it at that time.
Great Qing Dynasty copper coins Bingwu Center Guangdong mixed Guangxu.