Yeah, these are Paulson fantasy chips. They look to be in great shape too! You can easily build a "mixed" set around these, but if you want Scandia Casino $5's, you will have to be on the look out for $5's on eBay or post a "wanted to buy" ad here on PCF.
Nice score. I happen to use those as my singles for my mixed cash set. Nice chips. I bought them a few years ago for a hundred a rack. Building a full set (adding on $5, $25) will be hard to find... and expensive. I would recommend selling them a rack at a time and using that money to buy a full set during the next chiproom sale.