Field Maple, between 20 to 25 years.
Repotted a few days ago, and pruned back heavily in upper 3rd. It had too many long stiff branches with awkward angles, elas quite typical for field maple. I need new ramification on younger branches too. Now I can start over. It has many buds on trunk as well so there will be enough choice.
Thin akadama toplayer, underneath a mix of zeolite-vermiculite-lavasand-cocopeat.