I'd mainly be watching the Chinese markets if holding a bunch of these. There was a time many years ago when demand and value went up on these, kinda like they have over the past 6-8 months. However, it didn't hold a few years ago and eventually people had to start dropping them. If the Chinese stuff doesn't start picking up throughout this year again then I could see the same thing repeating itself. They weren't worth much after the last bubble and I don't think much has changed with this one.