Can anyone help me identify this bullet?

Found this bullet while metal detecting in Romania. My first guess this might be a Mauser round.
Picture here

Looks like 7,9x57 Mauser. Read what is says at its bottom.

The headstamp is “A” over “H” which stands for Csepel Arsenal near Budapest, Hungary.

44” = the year the cartridge case was made.


I totally missed the right upper corner insert!!!