My wife and I recently bought a house, and even though this detail wasn't mentioned by the seller or the realtors, one of the bathrooms has a dolphin painted directly on the wall by the famous marine artist Wyland. It's about 6 feet high and 3.5 feet wide. Apparently one of the previous owners of the house won a radio contest back in 2000, and the prize was for Wyland to come to the house and do a painting on the wall.
Here's a photo of it:

We'll be remodeling the bathroom in the next few months, and although the dolphin painting is interesting and unique, we'll most likely remove it since the bathroom is small and we need to maximize the usable space along that wall. Since Wyland is such a well-known artist, we're thinking we can probably cut the painting out of the drywall, frame it, and sell it.
We stopped by a Wyland art gallery the other day and showed the photo to the consultants there, and they said it's probably worth at least $10k-$15k based on the price of a couple of pieces of similar style and size in that gallery. We plan to have its authenticity confirmed by the Wyland corporate office.
I have a few questions that I'm hoping some of you with art collection experience might be able to answer:
- Is this sort of thing commonly done (cutting a wall painting out of drywall, then framing and selling it)?
- I'm guessing I should pay an art professional to cut the painting out of the drywall so that I don't accidentally damage or ruin it?
- After we have it framed, what would be the best way to sell it? To a Wyland gallery, a more general art gallery, some kind of auction, etc.?
- Any good art-related discussion forums where I should also ask these questions?