Need a value-1957-58 Lincoln IdealArc 180

[CMCollins]

I'm needing to find the value of a 1957-58 Lincoln IdealArc 180, Limited input type welder. Belonged to my dad. Not in fantastic shape, but he was still using it up until 3-4 years ago. He has Alzheimers now and obviously doesn't need it. Appreciate any and all help.

[farmall]

Condition is everything, so post clear pics (front/back/sides), and location in case anyone wants to make an offer.