Hello from Greece. At first, I must say that here in Greece the 50% of the arcade cabinets was generic jamma black cabinets with no labels or anything else on them. I have two of those no-name cabinets and I can swap any component between them even if they are totally different in appearance. All the components (basically the joysticks and the buttons) are the same. The problem is that I want to change the joysticks/buttons because they look old but I can’t identify their type.

They have leaf switches but the main differences with the known products are:
About the joysticks, the end of the neck is 6mm while all the others are 7-9mm(?), and I am not sure if they fit on the same base.
About the buttons, they are small and the curve on the top is very deep.

If anyone knows about them please let me know. I’ve found some truly leaf switch joysticks from groovygamegear.com, but I am not sure if they give the same feeling.