I used to collect old sign letters and have bought them in different car boot sales, french "brocantes", on ebay, etc.... this was a while ago, before they came in fashion. Now they are very expensive and you can find new letters in lots of places.

are they made of G.I. metal?

probably...

Beautiful kitchen! Love lots... clean lines. more interesting lighting, stools and baskets of metal, splashes of color but not too much... however LOVE the 'NA' above the upper cabinets... as if you wondered what to put up there and thankfully decided 'NA, nothing'... quite humorous and thoughtful... though I may be reading too much into them... giggles.. a little humor is always good, right!?!