Identification wrist watch engraving please

[B446]

Hello everyone,
iI've recently purchase this vintage Bulova wrist watch and found this engraving on the back.
I think that the sequence must be read as: 36 848 946
I've done research online and cannot find anything with these number. Any ideas ?...
thanks for your help.
Frank.

[ROLAND1369]

It looks to me to be his army service number, a common method of marking personal equipment of a soldier.