Hi all,
Saumur tank museum displays a PT-76 with the short hull and the "new" gun with the muzzle brake and bore evacuator.
To my knowledge it is not a PT-76B which is the name on the longer hull tank.

Does anybody know the right denomination of this intermediate version?
TIA

Olivier

According to wikipedia, it is the PT-76 mod. 1957. The PT-76B is mod. 1958/1959.

Here is the description of the 1957 model:

"PT-76 armed with the D-56TM 76.2 mm rifled tank gun (double-baffle muzzle brake, bore evaluator, fume extractor) and a height of the hull was increased by 13 cm.[5] It has night vision driver device TVN-2B, new headlamps, a new R-113 radio instead of the old 10-RT-26E set (it was later replaced by the R-123) and TDA thermo smoke generating system.[5] It also has a spotlight fitted to a bracket on the right-hand edge of the turret roof."

Here is another article from some enthusiastic authors, I find these article very detailed.

https://thesovietarmourblog.blogspot.com/2018/#d-56t

"The original D-56T is fitted with a multi-slotted muzzle brake of considerable length, but from 1957 onward, new production PT-76 tanks were armed with the newer D-56TM cannon with a new updated muzzle brake with a fume extractor."