Living in Saudi Arabia, we see lots of fava beans, so I will pass on
what may be of help. They do come in a variety of shapes, colors and
sizes. They can be bought dried, canned or fresh. In Europe they are
called "broad beans", so this may help in your search. While visiting
the U.S. I have seen canned beans in the foreign food section of the
grocery store. Be careful not to buy can's labeled "Foul", or "Foul
Mudamas" for cooking, as these are already a prepared dish, sometimes
known as the national dish of Egypt! (try it though! It is delicious)
I have also, on more than one occasion found canned and dried beans in
Middle Eastern grocery stores. Again in different sizes and colors
ranging from brown to dark purple. I don't believe they make a
European/Egyption distinction, but I have found the brown ones to have a
softer skin when cooked.
I hope this helps
Elizabeth