For a knowledgeable collector, this watch chain is exceptional in several ways. Firstly, it is progressive, meaning that the size of the links gradually increases towards the center and then decreases again. For the jeweler, this is a manufacturing feat, as this model is much more complex to produce than a regular chain. Additionally, it features a remarkable 75 hallmarks!
Each link is stamped with a lion, and numerous other hallmarks are present on the additional components. The chain has a length of 36.5 cm. Professionals use a stone known as a "touchstone" to verify whether a product is truly made of solid silver or not. The principle behind this touchstone relies on the reaction of silver with a mixture of 2/3 nitric acid and 1/3 hydrochloric acid.
If it is indeed silver, the mark will turn red. Multiple marks must be made in the same spot on the object to ensure that it is not simply silver-plated. Anyone can obtain this kit. This object has been tested numerous times and in various locations using this kit, confirming that it is indeed made of solid silver.