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Help with 37mm Polish headstamp
- I have an interesting 37X257R inert fired brass shell case of Polish manufacture dated 1939 [no projectile]. Unfortunately I don't know the Polish language and I'm not too familiar with the Polish headstamps. The rimmed shell case is 257mm tall [a little over 10-inch] and the base [rim] diameter is 56mm [almost 2 1/4 inch]. This type of 37X257R round was used by the 37mm anti-tank [AT] Wz.36 cannon manufactured in Poland under licence from Sweden. It was a copy of the original Bofors 37mm AT gun from Sweden. The 37mm Wz.36 AT gun made in Poland in 1930s was used by the brave Polish soldiers agaist the Germans during the fall of 1939. --- My picture from top shows in the middle the 37X257R Polish rimmed shell case dated 1939. At left is a fired German 37X263B belted shell case dated 1938 and used by their 3.7cm FlaK. At right is a fired Soviet 37X252R rimmed shell case dated 1943 and used by their 37mm M1939 AA gun. --- The bottom picture shows the hedstamp markins for that 37X257R Polish shell case. Note the black ink markings from top "BRT2 190 Pn-4-38" which give data about projectile and propellant used and I need help with these markings. At bottom the black ink markings "F.A.-31-39" may have these meanings: maker's mark "FA" for "Fabryka Amunicji" PWU-FA located in Skarzysko-Kamienna [now ZM MESKO], lot number for assembled/loaded case "31" and two digit date for the year of round assembly 1939. Above the primer is stamped "37 wz.36" which shows the caliber in "mm"/37 and the type of gun / "Wz.36". The mark "wz" is the short for "wzor" which means model/type. Below the primer is stamped "FA 18-39D" which may have the meaning: maker's mark for shell case manufacturer "FA" [see above], lot number/18, two digit date for the year of shell case manfacture 1939 and the letter "D" which may stand for the brass supplier code for "Dornach" from Switzerland [the company which supplied the brass for case manufacture]. There is also a small oval mark having 2 numbers inside, perhaps a quality control stamp [?]. Note the big black ink "P" letter stamped around the fired percussion primer screw. I'm almost sure this "P" letter means "Armor-Piercing" / Przeciwpancerny. Any help will be appreciated. The picture should be posted soon below. Orita 07/28/06