This was posted on Facebook and was purported to be a genuine threadless egg. My question is for those who know more about these than I do. Is this a repro, or could it be the real deal? My thought is that it is a repro. The glass clarity and overall condition does not feel like a Civil War vintage piece of glass. Additionally, I recall a number of Threadless eggs being discussed after they were posted for sale on craigslist, and this reminded me of those.