Was hunting a area of our park that used to have homes i the 1800s. The lower part of the town was wiped out in 1913 and 1937 floods. No homes remain. I found a flat button, Some round thing about the size of a quarter with a hole in it dated 1869, and this CW button with a "I". First 'I" button. That gives me a R, C, and I buttons now. Using the F75LTD2. The CW button hit at 49-50.