I want to say that there were two or three flags total in the display, but it was probably 40 years ago that I last went there, it could have been one or it could have been several. There could have been more than one flag found in the attic...though that would have been a little strange.
I guess that most of the items were on loan, but what does a museum do with things like 150 year old flags when they decide that they no longer want to show important stuff.
I took my kids to the Pink Palace back in the early 90s, and I did ask a couple of workers where the good stuff went to, but they had no idea.
The owners of the house at the time had moved to Senatobia from St. Louis in the early 60s. They found the hidden room a few years after they bought the house and all the artifacts found there were on loan to the Pink Palace. I don't think that they were still living there by the late 70s.