Looks ya like Pennsylvania Dutch to me, or maybe Amish? I would price it at $175 and take the best offer. You don't need to sell to the 1st person who makes an offer. Simply tell them you're hoping to get a little more, but if you can't will sell to them. This style is great for anyone wanting to do a cottage kitchen with painted white furniture~yes, more than likely it will be painted. This may be the person willing to give you the best price. Good luck.

Don't necessarily HAVE to have marble, but I really really like that aspect. I have found some at Room and Board and CB2 that I like, but they are SO short, only coming about 15 or 16 inches off the ground. I would prefer something closer to 20 as I use my coffee table as my laptop "desk" all the time. I found one that looks almost exactly like the one from the show except it is all wood made by Ole Wanscher, an MCM designer I had never heard of: I guess maybe I should concentrate more on finding something new that is reminiscent as it would be difficult to find exactly what I'm looking for in vintage. Any sources for round coffee tables with clean lines? I'd like something around 36-40" in diameter about 20" tall.

The dining chairs are by Poltrona Frau, the Montera design. It comes in a few different configurations of the arms as well as heights and leather combinations. Here is a page- scroll to the bottom to see the chair in the exact configuration you show here. https://www.poltronafrau.com/en/catalogue/chairs/montera I don't think the table is by Poltrona - I looked at their website to be sure- I saw an occasional table called the Hudson, that reminds me of the base shown here, but I don't think so.

I don't know what I would ask for them. Since you now know what you have you have a little leverage on price. Maybe $1,000 at a minimum but maybe more maybe less. I just don't know. Maybe a consignment store would be a better place to sell them or see it you have any stores that specialize in vintage furniture you could sell them to. Of course a vintage store you would sell to them at "wholesale" price because they have to make money. Some resale stores even specialize in MCM items. They may want to refinish/rehab/ upgrade finish, them so they have to figure that into what they are willing to pay. You could also luck out and advertise on Facebook or nextdoor for someone looking for that style of furniture and willing to pay a reasonable price what ever that might be. But keep in mind that people shopping on Facebook could also be looking for stuff to buy and resell at a higher price ie; flippers. Also, having random people coming to your home is not a safe thing to do these days. If you do that make sure you have others with you and have them send a picture of their driver's license before you meet at minimum and send that picture to others so they know who you are meeting. I've sold a few things on Craigslist but have whatever it is ready outside in front yard and have someone with me. Cash only of course. Maybe knowing what they could be worth is a hassle because now you know they are probably worth more than you originally thought and don't want to be taken advantage of on price. You just have to figure out how much time you are willing to put into parting with.