what does the radiator weigh?

[prarieschooner]

The AC Generator started easy and ran great on the Coach that I am looking at. It smoked a bit after starting but no more than expected after sitting so long.
When I checked the Coolant it was low so I added some water and looked for the leak. It looks like the Filler Fitting is cracked where it meets the Top of the Tank. I will need to repair this after the deal is made.

Any Idea how much this thing weighs? it doesn't look like it is light so I wanted to ask before I stressed my back.
Steve