Walt- guess I must have an early series- ITHACA on top in a circle- the I at about 10 o'clcok and the A at about 2:30 with the A at Top Dead Center- the below in smaller caps horizontally GUN CO. The G just below the Large I in ITHACA and the O with the period just past the A in ITHACA- the below it- looks like a punchbowl in serif- then in caps but slightly smaller than the GUN CO. ITHACA N.Y. then a straight horizontal line and in a rounded sub-set below that line PAT> APPL'D. FOT dark red about 4 & 5/8" long, 1 and 9/16" wide and the two counterbored screw locating and mounting holes are aprox. 3 and 3/16" center to center- would this have been on a Flues? RWTF