If the Thiessen-Crow $1000 is uncirculated, I wouldn't say it is particularly valuable, but it is a little rarer than some of the other varieties. The Lawson-Bouey $1000s are readily available on eBay, however, assuming you have the patience to wait. They crop up at least once a month and don't usually sell for very much. Though if you know someone whose birthday is February 12 or February 21, 1970, they may like the serial number on A/K 1970212.