Original vintage coal mining magazine ad for STROMBERG-CARLSON TELEPHONE MANUFACTURING COMPANY of Rochester, NY.  Mine Signaling Sets are absolutely Water Proof.  A Mine Signaling Set is an imperative need in case of fire, flood, explosion, or other accident in the mien.  No. 963 Mageneto Generator.  Loud Ringing Signal Bell.  Old 1910 mine equipment and supplies advertisement.  There is a one inch tear at the top of the ad and on the right side , but it will matte and frame wonderfully.