They are pretty hard to find. I think I have heard of a little over 15 of them over the years and more are out there.

I have been in the market to buy one for a while so if you would want to sell it let me know I would be interested as I have a big soft spot for those plows!

and if the plow has been outside before it probably would not hurt too much for it to be outside for a couple more years. Although it is not ideal storage, keeping it outside at your place is better than it being lost to scrap. Although it doesn't sound like that's the case here.