The actual Measurement of the national Insignia refer to these German Aircraft models: BF 108, BF 109C, BF 109E,BF 109F/G/K, BF 110, DO 217E, FW 190A, FW 190D, HE 111, HE 219, HS 129, JU 87, JU 88, ME 262.
It can be put into a plastic bag, cleaned with tool cleaner(T116) and dried naturally. If the paper is bent out of shape,you can use an electric iron to repair it.