Nice find. I collect and sell those kind of chips:
http://www.antiquegamblingchips.com/poker_monogram_scrollaz.htm
http://www.antiquegamblingchips.com/poker_monogram_scroll.htm
I would buy some of the J's.
From the picture below, you can see some the letters I am missing. Some we have never seen. They are a good 75-100 years old.
Robert