Theft-proof letter box is narrow and has curved top which faces outwards, mail or folded newspapers being pushed over curved lower flap into box and removed by opening hinged flap in its base

摘要

The theft-proof letter box is narrow and has a curved top which faces outwards. Mail or folded newspapers (2) are pushed (1) over a curved lower flap into the box and are removed by opening a hinged flap (4) in its base.