Sectional Key: part of a Master Key system of keys. See Chart to show how it fits in the system. 
Same as:

5SH7 Star     923G Old Schlage     L159 Keil     SH12 Silca     SC  11 Curtis     SC11 Kustom     145G Dominion     145G HD     145G Osco  
   SCH19 CEA     SLG  22 JMA     145GS Taylor     1145G Ilco     1145G Orion     35  100  G Schlage    

Many of the keys are older and show signs of age. 

We have a large variety of old inventory key blanks and parts.  If there is something you are looking for please let us know.