The O and IO-360 (200 HP)props weigh 50-55 pounds according to Vans. The weight shouldn't be more than 10 pounds more max. They don't list the RV-10 prop yet.
Bill Jepson
A 72" compact hub, complete with Van's spinner and hardware, weighs 59 lbs. Not sure what prop is specified for the RV-10 but I suspect it's an 80" or so and would be several pounds heavier.