It is considered to be the "premeire" user of the older iron lady (black cast iron) machines. One of the more expensive to acquire originally, not as old or as rare (from a collection standpoint) but a very smooth well built straight stitch machine. If I could find one without the "potted" motor I will have one someday....but I will use mine in a treadle. The one in the picture I would consider "very desirable". I would personally think a complete machine/cabinet in that condition would command a premium price....but I am in Alaska so have little to choose from.