Go to HiFi Shark, https://www.hifishark.com/search?q=Tandberg+3001 , click on the "Sold/Expired" tab at the top of the listings, then on the "Site" tab at the top of the list to sort them by where they were sold and scroll down until you see U.S. sites, which are marked by a small U.S. flag icon. Those will be listed by date so you'll want to pay attention to the newest ones.
Tandberg 3001, 3002, 3003
I was passed down a Tandeberg 3001-3003, basically Tuner, Preamp, and Amplifier in pristine condition. I tried searching the internet for a reference price but I can't seem to find too much pricing on them. They seem to be pretty rare especially if you have all 3 components like I do. Anyone know pricing on something like this?