Rock Island Key ( Ice House )

Some what difficult key to obtain is this one marked CRI&P on the front. Back side has the small left sided Adlake. Rock Island had several different switch cuts for various purposes. This particular cut key was for the ICE HOUSE locks. One of the harder Rock Island keys needed for the collection. Example has great pocket wear with the small upside down triangles for periods. Can send pictures of both sides upon request !!!