Here's a nice jar...one I bought from greg Spurgeon's auctions.. an aqua 1/2 gallon THE MASON JAR OF 1858 [ in square and circle] , RED BOOK 1748, with Boyd cap- see picture.The jar is in excellent condition....some matter is embedded in glass and a strange-cut line through O and n in MASON. Greg told me it was made during manufacturing of jar. 50 0/0 of sale will go to forum- I will pay shipping. Auction ends 1 week from tonight at 9pm EST. Please e-mail with questions. Good Luck.