Thank you both
Well I abdicate about Bassein...
But I still think that the sword is too nice to be late 20thc.
I will accept mid 20th c.
I'm surprised that no one commented the similarity with Kronkwe sword, the same hilt.
I can see the British peacock on the hilt
https://en.wikipedia.org/wiki/State_Seal_of_Myanmar
https://en.wikipedia.org/wiki/British_rule_in_Burma
I can see 2 inscriptions on the hilt, one on the guard like mine and another just above the peacock's head. It would be nice to have a translation...