Terry bikes are good! This is a very well preserved example. It looks like a 25-year time capsule. They are often very small; that is kind of the point. But that makes it hard to guess gearing. Nevertheless the gears are very likely much lower and higher than the old C&V bikes you started with. It should be good for your event. The listing says "SOLD," did you grab it? I hope you enjoy it.
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Genesis 49:16-17