4 Kc. Postal stamp with bright blue green hand stamp overprint "Karlovy Vary 1. X. 1938+swastika", tied by cancellation adjusted date stamp "Karlovy Vary 1 4. X. 38 4 d" on letter piece, faultless condition, issued only 118 examples, expertized Dr. Hörr and expertise Brunel VP (2021) : "the condition is perfect. "