Managed to catch the local shop open today ! sadly not a GS cap but a khaki beret with no labels or markings inside, on the outside was sewn a small green felt square, I passed on this !!,anyway moving on I have come across a GS cap online which is described as a worn 1945 version, have attached the seller's pics below, it appears to me to have 2 small holes in it, the pics are not too clear but have attached them for your consideration. looking at the markings inside the nearest I could get was the name Maus Freres ??, this was a Swiss clothing retailer est.1902 still in business today and own such brands as Lacoste, I may be barking up the wrong tree here so your opinions would be most welcome, the price being asked is £30.00.