This swing-arm style window latch is 2 1/4″ across the back and projects,2 1/2″ including the length of the arm., It is plain cast iron (without a pattern),accented by a bronze button which is spring loaded for snapping the arm,into place.,The latch is marked on the bottom: “PAT. Jan. 4 & June 13, 1876.”,The latch has been cleaned and oiled. All original. , ,Care of cast iron latches:,We never recommend painting or varnishing window latches to keep them from rusting. ,Either of these treatments diminishes the value of the hardware, makes the hardware,look questionably un-authentic, and creates a look not conducive to vintage homes. ,Genuine cast iron hardware needs to be given the love that one would give to ,a prized hand tool. If the piece gathers surface rust because of humidity,,simply prepare an oiled rag and clean (rub) the hardware. The cast iron will glisten with ,re-newed vitality.