Three rare 3,7 cm Skoda shell cases

[Hoeksel]

I am helping a collector with several ID's. Shown are 3 rare shell case head stamps. I am looking for verification/help for the ID and explain some abbreviations.

1 - I suspect a Czech made Bulgarian 3,7 cm Skoda M1937. Bulgaria is pretty convincing as they often used "D" to represent "L" as in "L/48". The Skoda 3,7 cm M1937 is L/47.8 and known to be bought by Bulgaria. Does anybody know the meaning of "CA", "S1" (probably S indicates lot) and "u.c."?

2 - Another Czech made Bulgarian 3,7 cm Skoda M1937. Any clarification about the meaning of the Cyrillic marks is appreciated. Notice the German made primer.

3 - Czech made under German occupation, a 3,7 cm Skoda M1938. It should be for the 3,7 cm M1938 A7 tank gun I assume. The primer has an "S" which is uncommon and possibly comparable to the "S" on the shown Bulgarian 3,7 cm M1937 (#1). I do not know the meaning of "T.K." nor does the logo above 1941 ring a bell. Also not sure for which country this is.....

Thanks in advance, and even if nothing get's ID-ed, these head stamps are too cool not to share .

 

[AKON_]

ad1) the cartridge goes into the 37mm insert barrel for Croatia, used in the navy.
Here is a preview of the ballistic tables.
Where is the designation ,,u.c.,,,
Vo-700m/s
M - 825g,,
Typ : Tempirna dimna granata,,
Here is a preview of the ballistic tables. Where is the designation ,,u.c.,,,

Továrna na nábojky a kovové zboží, akc. spol. Rokycany Patronen-Hülsen- und Metallwarenfabrik A. G. Rokitzan Rokycanská zbrojovka Kapslovna, Kovohutě Rokycany, akcie

37mm skoda shell

Hello, looking for info about this 3.7cm skoda shell My guess goes to a czek made for export, may be 4cm Z1, ex Austro Hungarian 3.7cm L/70 navy gun used by Jugo as 37/67. something similar here...

www.bocn.co.uk

 

[fert]

Hello,

browsing web looking for info, I came across a good topic:

https://forum.axishistory.com/viewtopic.php?f=102&t=159902

it seems a bulgarian member refers to 3.7cm vz 37 as "37,2mm vz 37" Skoda A4. These delivered in 1939-41.
n2 case could have been produced too early for a bulgarian stock?
about bulgarian marking, why fuze are marked 37,2 and case are not?
Could n2 case have been made for Jugo?

regards

 

[Hoeksel]

So for shell case 1 Akon showed us it is Croatian (part of Yugoslavia). D is for the barrel length (also on Bulgaria WW2 cases) and u.c. is for Umetnuta Cijev (insert barrel) from earlier thread explained by AKON. I assume S is for "Serija" (Latin as used in Croatia) and C (on the other case) is for "Серија" (Cyrillic as used in Serbia and Yugoslavia) both meaning lot (guess but makes sense). Only CA needs to be clarified, I have no idea. Looks like a factory mark to me.

Case 2 has Cyrillic writing and can be Yugo or Bulgarian. Personally I now agree with Fert, as "C" is used as lot indicator on Yugoslav ordnance and not on Bulgarian ordnance (I double checked my list of my old collection). I would love to know the meaning of "T" and "BK".

Case 3 has an "S" on the primer which points again to Yugoslav. Interested to know the meaning of "T.K." and also why this is so different from case 2 assuming both are indeed Yugoslav. My old collection had 2 4,7 cm Skoda M38 Yugoslav cases, both where marked "NKT 47 mm M38" so these additional letters are indeed common.

 

[AKON_]

My old collection had 2 4,7 cm Skoda M38 Yugoslav cases, both where marked "NKT 47 mm M38" so these additional letters are indeed common.

PK .Protiv kolski top - 4,7cm (Jugo) document date 1939.