Reference: C15 s/n 2842129988 history and restoration

[Ken Hughes]

hi rr have a go yourself, try panel beating on a simular bit of panel steel first.
a dint on a corner panel can be blocked out first from behind
with a suitable shaped dolly/hammer or whatever you have.
you need to practice on a flat panel with on dolly off dolly blows
block up the dint 90%,hold the dolly under the low point and hammer the high points around the rim of the dint, you should see the rest of the dint raise up as you go.
I should say practice on the same thickness panel steel as
you are going to use try it , but does take practice.