Tulwar stamped blade mark question

[Rumpel]

Reviving an old thread...

I was cleaning my very unspectacular munitions-grade tulwar and noticed a stamped mark under the langet I hadn't seen before (because I was too lazy too clean under there ).

Both the marks look rather like the numeral '3', one in European numerals, the other in Arabic/Hindi/Persian- only with both, neither are quite right, the one approximating the eastern 3 being backwards.

Any ideas? I've checked the forum and can only find 'eyelash' and 'kata' stamps, admittedly on superior blades.