1900 era Post office mail box door  Has US on front with a 8 point star in center , with a turn knob  to open it  to p open it need to clear it first turn it several times counter clock wise then to the 3er point from the top and back to the 4th point from the top  lift lever and it is open.  door is 3 3/4 in wide and 5 in tall  has a replacement glass. Please ask all questions buyer pays 9.00 shipping states only