They appear to be Italian Made, the marble very much looks like Italian Marble, with the classic clean cut, fine workmanship.
The Marble, Table Lamps circa: 1960's have an estimated value on the current market for an average of $225.00-300.00 each, depending on the condition and where it is for sale at. These will typically sell higher in an Antique Shop or Private sale compared to an auction. If you are thinking of selling, you might want to check your local Antique Shops in the area to see what yours or one like it would sell for or has sold for, then you can decide to sell online or locally.
Keep in mind that not all estimated values are obtained, your geographic area plays a big role in what prices can be obtained. If you plan on selling this I would list this for sell on the internet where it will have the largest shopping market. There are some great sites you can sell from. You can sell in your local area or a larger city near you with Craigslist, it is free, and when they item sells the buyer picks it up.
You can sell on Etsy, which is a great place to sell from, you list Vintage Items, they can stay until they sell. Much like having a little store online. There is also Rubylane, which is a more upscale site where people sell more expensive items. There is also Tias and GoAntiques, which is on the same scale of Rubylane. There is Amazon Market Place, ArtFire and of course Ebay. All of these sites get you a lot of World Wide exposure and bring the best traffic. They are all great! If you sell to a dealer, antique shop or resell shop you can expect to get about 30-40% of what it is worth since they have to resell the item.
If you have more items you would like to ask me about, just start a new question addressed to "Glenda" it would be my pleasure to help you.
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