German 21 cm rocket markings, WW2

[Grzesio]

Hello,

Could you like to help me with markings found on the inner side of two examples of a German 21 cm rocket turbine?

It comprises of 5 a and a reversed triangle with asw over 2 inside.
Could the asw be just an ordnance code of E. & F. Horster, Solingen? I think they rather made bayonets... What is the meaning of the triangle and 2 then, have you ever encountered this style of markings?

Kind regards

Grzesio

 

[Grzesio]

And yet another marking, this time on the front surface of the combustion chamber - a square with 43 inside.
It could be the year of manufacturing, but...

Kind regards

Grzesio

 

[Grzesio]

Another markings appeared on another two turbines from the same batch, making the things even more mysterious...

One turbine was marked with:
- partially visible mark "&" inside the nozzles ring



- letter "V" and "1 in a circle" between the nozzles



- letter "G" and unrecognisable mark in a circle between the nozzles too.



Second turbine was marked with:
- mark "&" and "1 in a circle" between the nozzles



- unrecognisable mark in a circle between the nozzles.



There's also a little bit more corroded turbine with a letter "X" visible between the nozzles...

Have you ever encountered this kind of markings on a German rocket? Especially the "&" makes me really curious...

Kind regards

Grzesio