Repair 1: I cleaned the old solder off the hand, reshaped the metal then used hard silver solder to join the two parts of the hand. The heat required during the soldering discolours the steel so I completed this repair by bluing the hand back to a uniform colour matching the minute hand.
Repair 2: The hand is fitted to the hour pipe by a pin through the small round hole just above the centre hole. This pin should be a tight fit in a corresponding hole in the end of the hour pipe, but it wasn’t, neither did it have any head. The result was that the hand would wobble about quite easily. Close examination of the hole in the hour pipe showed no sign of any thread and it had a slight taper, so instead of threading the hole and fitting a screw I made a taper pin with a head on it to hold the hand firmly.