Rare 1891 Vintage Large Heavy Bronze Plaque Sign VACUUM HEATING CHICAGO

Please see photos for condition. Rare 1891 Vintage Large 6" X 7" Heavy Bronze Plaque SignReadsTHIS PLANT IS EQUIPPED WITH THE VAN AUKEN SYSTEM OF VACUUM HEATING CONSOLIDATED ENGINEERING CO. CHCIAGO patented june 1891 thur 1910. Please look closely at the photos and judge for yourself. You will receive this exact item.

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