Navigator & Onserver Wings

I need your help. I was a navigator in the RCAF 1951-82. I am looking for Observer and Navigator wings worldwide both military and Civilian. We are now building a Navigation exhibit in a Canadian Air Force museum. I am designing this exhibit and helping this effort and will donate my Navigator/observer wings collection to the exhibit. So if you have any Observer or Navigation wings any country, metal, cloth, bullion, please let me know. I will buy trade or whatever. I am also looking for scans