THIS IS A NEW NOS VERY RARE VINTAGE ANTIQUE METAL MAGNUS POWDERED HAND SOAP DISPENSER CANISTER MADE IN THE USA BY MAGNUS CHEMICALS IN ST PAUL, MN. NO LONGER IN BUSINESS. THE TOP CENTER DISC PLATE WILL TURN TO OPEN, FILL, AND CLOSE WITH A REGULAR FLAT HEAD SCREWDRVER. I DO NOT KNOW HOW IT MOUNTS ON THE WALL AND THE BRACKET PLATE ON THE BACK IS FACTORY WELDED IN PLACE PERMANENTLY. I PROBABLY WOULDN'T USE THIS FOR A SOAP DISPENSER ANYWAY SINCE IT IS VERY RARE AND THE ONLY ONE I HAVE EVER SEEN. SO WHETHER YOU ARE AN ANTIQUE SOAP DISPENSER COLLECTOR OR CANISTER COLLECTOR OR A MAGNUS COLLECTOR IT IS ONE OF A KIND UNLESS SOMEONE CAN SHOW ME ANOTHER ONE IN 50 YEAR OLD NEW ORIGINAL CONDITION!!!