This wooden box mine is exactly the same as the Russian PMD. The mine got adopted by the Finnish army. The marking "SA" on the lid is typical for Finnish (imported) ammunition.

Photos © Mark Jochoms

Data taken by Mark:

Lower compartment: Length: 185mm, Width: 66mm, Height: 32mm, Diameter fuze hole: 19mm
Upper compartment: Length: 193mm, Width: 80mm, Height (fuze side): 35mm, Height (hinged side): 25mm
Total height, no fuze placed: 37mm , Wood 6mm thick , Empty weight: 190gram / 300gram (with glass).