Attached: 2 images The height of a floor at Moscone is 37 feet. These letters seems to be roughly 63% of the height of the floor. This would mean the cap height is 23.3 feet. Assuming this is a capital C, a typical cap height to font size ratio is 6 to 10. This means this is a font size of 38.8 feet. 38.8 feet is 465.6 inches. A classic typographical point is 1/72nd of an inch. This means, I think, that these letters are font size 33500.