Piero,
if you need one like marathonpaul posted (and that is probably what you want), you should be able get some made by a sign maker shop with a vinyl cutter. They have a wide variety of fonts, and could surely match the simple Dunstall style. You would have to give them a picture of what you want and tell them the dimensions, but that's about all it takes. If you can compose the logo you want on your computer and give them a file, they can print from that. You can give them a vector graphic file like from Autocad, and they can print it directly, or they can convert from a bit graphic file like .jpg. Here in the US such shops are quite common. I've had a number of custom logos done by a local shop at reasonable prices.
Ken