Norton 1938 International Engine

Norton International engine with Manx barrel and head, 500cc.
One broken fin on the head when removing the engine.
Year 1938, over £3,000 spent on the engine with bills to prove.
The engine has done 2,000 miles since the engine rebuild.
I have taken pictures of the engine in the bike to show I was using it.
Will go straight into your bike. Any inspection by anyone who knows what they are doing.
Engine number 28713, 1938, 500cc International engine.