Number in body F-1 Polish

[no3nh4]

Hi at all.
A question
What is the meaning of this number (see image) that appears on the body of the F-1 grenade of Polish origin?
I think it's a Polish grenade, is not it?

Thanks in advance

 

[Yodamaster]

Probably the manufacturer's code ! Badly, it is not in my tables !
The only 31 I have is swedish



Yoda

 

[jvollenberg]

31 can be an unknown factory in Hungary as well.

Joe

 

[batonroundcollector]

I wondered this too.

see zonk007's post on this thread:

http://www.bocn.co.uk/vbforum/threads/53188-Polish-F1-Type-Grenade

I'm guessing it is factory/foundry number?

 

[jvollenberg]

So what factory is 31 in Poland?
Joe

 

[no3nh4]

This grenade was found in former Yugoslavia.

Hi at all.
A question
What is the meaning of this number (see image) that appears on the body of the F-1 grenade of Polish origin?
I think it's a Polish grenade, is not it?

Thanks in advance
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