These are so scarce, even the fact that one is actually for sale is a rarity in itself! I am not affiliated with the seller, I just though it interesting enough to share..
Enjoy!! Yeah $45,000.00 worth of enjoy!!!!!!
http://www.gunbroker.com/item/681536835
Remember the Dumb Crook story from many years ago, guy got many years in prison in Canada for robbing a bank, didn't get much in the haul but he used a North American Arms 1911 to do it with! A pistol even MORE RARE than the Singer 1911A1, conservatively valued at $100k in 1980s dollars... Can't make this stuff up!