Your questions are fine. I recently picked up a Puch Clubman for $5 at a garage sale and was able to fix it up nicely for a niece with parts from the bucket and some cheap replacement aluminum wheels. It's a standard 70's/80's lugged frame with comfortable geometry. It would make a good fixed gear or commuter. There is plenty of room for fenders and they have English standard threading. Plus being your dads it has heritage. What's not to like?