...for this new habit! Within about 30 miles of my home are over 30 WW2 airbases and today I visited one close by and found these items. There's a nice bunch on Window and some .303s. The switch is marked Ref no 5C/543 and I have no idea what the arrow is for - it looks hand cut. Any ideas?
Btw, my nearest base has been covered in a new 'fertiliser' by the local farmer made from domestic waste. With all the foil etc. in it the metal detector is useless!