NOS GE electrically heated cover for K-17 aerial camera USAF Korean war

This is an interesting item. Electrically heated lens cone cover for K-17 Aerial camera. Ive had brown ones just like this that were WWII era. Note on this item: These are preserved for long time storage so when you open the package there will be a strong chemical preservative smell at first... Let this air out for a little while and it will go away.