You must be very optimistic,if you think the stamp on that letter could possibly be Sc.194 ! A stamp what most likely never ever was used for
Not collecting chess-thematics,I have a few from my country-collections:
International Chess Federation´s 60th anniversary.
Costumes from Magdeburg-district,Sachsen-Anhalt (Saxony-Anhalt).
Issued June 17th,1986.
Benz Patent-Car again,issued May 5th,2011.
And a last one,with a "hidden" pig,issued Dec.26th,1982.
Tuna (amongst others),issued Jan.2nd,2010 (self-adhesive).
Winter Olympics in Innsbruck,issued April 7th,1964.
The "jester-like" character is the "Münchner Kindl".
She derives from the (small) coat of arms of München (Munic).
Here on a stamp from a set of...
car (and bicycle) on a carousel; stamp issued Sept.9th,2010;
(part III of 3)
Is it possible,that the rate for air-mail letters was 6 C. ?
Issued Sept.19th,1974.(from a set of 4)
Minami Arupusu (South Japan Alps) N.P.,issued July 10th,1967.
Freedom from Hunger,issued July 15th,1963.
A monster bike: Kleines Kettenkrad Typ HK 101
Developed by NSU,less than 10.000 were built during the war.
Stamp issued March 11th,1944.
Separate names with a comma.