I am helping a collector for ID. Fuzes are not my cup of thee, but I suspect all 3 (edit: found a 4th one) are the same. Are they for the 3,7 cm Skoda M1934/M1937/M1938? Their name is then A.Z. N34 (t). I have no dimensions but they should be for a 3,7 cm round.
1 - Steel German made.
2 - Brass Skoda marked fuze, letter "C" which is typical Yugo or Bulgarian for the lot ID.
3 - Steel with Cyrillic marks. I first thought Russian 3,7 r-DA but as all 3 look the same it could also be Bulgarian for 3,7 cm Skoda M1934/1937/1938.
Edit: 4th - Brass Skoda made 1939.
1 - Steel German made.
2 - Brass Skoda marked fuze, letter "C" which is typical Yugo or Bulgarian for the lot ID.
3 - Steel with Cyrillic marks. I first thought Russian 3,7 r-DA but as all 3 look the same it could also be Bulgarian for 3,7 cm Skoda M1934/1937/1938.
Edit: 4th - Brass Skoda made 1939.