Helpful hints about what?
About what kind of camera you found?
If it can be brought back to use? If desired, what would need to be done?
Or hints about taking photos of old cameras as such?
Personally, I find DOF a tad too shallow and would have liked to see not only the lens but also the body in focus. And I might have liked to see some more of the entire camera and seen from a slightly different angle.
Though, just to show what you have found, this is a good enough photo! No doubt. The sepia toning underlines the aspect of "old".