I'm interested in adding an aventurine dial watch to my collection mainly just for the sake of owning one. It won't be worn often and will probably sit in the case most of the time.

I've looked at various aventurine dial pieces from brands with different price point in person, like CW, Ulysse Nardin, Omega, and Lange. While the overall watch quality clearly varies, I couldn't differentiate anything aside from colors for the aventurine dial itself. These brands all have a relatively high…

difference between cheap and expensive aventurine dial?

This is my wife's grandfather's heirloom watch that had been sitting in her accessory box for 15years, untouched.
Purchase date is unknown.(assuming around 70-80s, could be newer, not sure)

sorry for the photo's color saturation, my phone camera's AI automatically auto saturate it and it's kinda annoying.

The watch looks almost identical to the JLC Club 200601, but it lacks the "Club" inscription on the dial.
Additionally, the case back is engraved…

【Vintage Heirloom JLC 】is the dial redone or something else?