Don't forget, there were 189 Deluxe grades made with Ser.# starting at 100,xxx. They have deluxe wood, beavertail forend, and a Simmons vent rib. The standard grade has a splinter FE and an aluminium (polychoke?) rib.
I have two of the standard grades. One was new and unfired when I purchased it earlier this year. It also has very nice wood and is mint in every way.
I hunted with my other FWM in Montana last year and it turned out to be an outstanding choice.
By the way, I don't think you'll find one at $600-800. If you do, give me a shout.