Yup, looks like a nice bike. New tubes, tires, brake pads and you have a nice bike.
To find the frame size, take a measuring tape and measure from the center of the axel where the pedals are up towards the seat. When you get to the top of that tube (called the seat tube) that is the frame size.
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Last edited by stevel610; 02-02-17 at 06:54 PM.