Looks like a 600 jr. old model. The new ones are the mark 5. Is the spring and primer platform in the prime station? Those parts are loose and most times get lost. The spent primer cup is nowhere to be seen in that pic,(it's a plastic tray that hooks under the screw under the platform).
You should be able to get between 75 and 100 bucks.
But why sell it? Get some more stuff, then get busy, load some shotshells!