You should be able to date your Dunhills by looking at the number stamped after the word ENGLAND. The smooth pipe is unsmoked? The Dunhill shell looks to have been smoked. The Barling is a Barling second, so not a collectible pipe. Boxes and papers always add a little value if the purchaser is a collector and not just a smoker. These are also fairly small pipes, at least that's how they look in the pictures.
This may be of some help to you in identifying your Dunhills:
http://www.pipephil.eu/logos/en/dunhill/index.html
There are always people interested in vintage Dunhills, especially patents and earlier. As for values, that's a little bit trickier. The pictures aren't really great for showing condition, and condition matters. You could see a few hundred dollars on each of them, or not. The prices of estate pipes have been fluctuating quite a lot over the past few years and have largely been tending downward. People are focusing more on buying tobaccos and less on pipes since the FDA deeming rules were publicized, and as more restrictions on tobacco sales are being proposed, more people are focusing on their cellars.
