I don't believe it's a 71 or a 70 Flexi. If you look closely at the unit without a lid on the seed hopper, notice the flat steel frame attached to the press wheel. On a 71 or a 70 Flexi, the press wheel assembly is attached with a cast drive housing. The press wheel itself, looks different than a 70 or 71. I think the small wheels are gage wheels for the toolbar. If I was a bettin man, bet its got a shoe/runner opener. I THINK it looks like a 50 or 51 JD planter unit. It'd be easier to tell with a picture of the other side, and less weeds in the picture. The picture below is a 70 Flexi planter I refurbbed, that predates the 71 Flexi. Compare it to Flusher's 71, and note the similarities. If the price was right, I'd get em for the project value. Of course, I could be wrong.

Mark