I noticed in their virtual tour that they showed "Palestinian coins, 1917."
Since there were no "Palestinian coins" in 1917, I looked a little closer.
Well, they have Arabic writing, and they do say 1917.
A short amount of research showed that they were not even Ottoman - but Egyptian!
Hussein Kamel was named Sultan of Egypt under British protectorate from 1914-1917 and these coins bear his name.
There is nothing "Palestinian" about them.
When a people have no history, they have to make a history up. And you cannot even trust their museums to tell the truth.