Ken, I don't think Descoware is old enough to be regarded as antique, but it certainly qualifies as vintage. I'm no expert, but I believe Descoware sold out to LeCrueset in the 40's or 50's. In fact some of the pieces of LeCrueset that were sold around the time of acquisition look exactly like Descoware. Of course you'll pay a whole lot more for the LeCrueset version which is kind of silly since it's the same stuff.
Actually, Descoware is quite affordable and readily available on Ebay in a wide range of colors, shapes and sizes. The most I have paid was about $38 dollars for a 4 quart oval casserole including free shipping. It's perfect for a single person like me and will fit a whole roast chicken. I also have a 1.5 quart oval casserole that is great for a shepards pie or baked macaroni & cheese, rice pudding, etc.
Both pieces arrived in remarkable condition inside and out. Not just for their age, but they looked as if they had never or rarely been used. I've probably done more to age them in the year or two I've had them than anyone did in the 60 years prior. They still are holding up remarkably well considering their age.
The thing that's a little tricky is figuring out the sizes because they aren't listed in quarts or liters as we might be accustomed to. They have number designations like 12 on the larger one and 22 on the smaller one. I'm not sure what they indicate.
If you are at all interested in Descoware, Ebay is the place to find it. There is every range of condition and price so it's really up to you what condition you want and what you're willing to pay. If you miss winning the auction, don't worry, another one will be coming your way shortly. I just love having the ability to decide how much I'm willing to pay for an item and then winning. I'm very patient and believe me, it pays off.