I understand how important an entire marking is, but in the case of a code identification of this type, it is the same maker regardless of the remaining information. Bob
EODGUY, at this point I have to disagree. There are codes which can only be told apart by the caliber (or ordnance item) they are stamped on. Most notorious for example is the code "21" which is used by Poland, Hungary and Romania (the latter often unknown because missidentified). Means if one finds a 21 on a 14.5x114 which is not upside down (Poland) it is not Hungarian (as mostly anticipated) but Romanian since Hungarian 21 never made 14.5x114. This is just an example.
Also it often matters what other features an item has once it can't be identified by the bare factory code like paint schemes, fonts used, accompanying markings, fuzes, primers, codes on cases or projectile bodies etc. It is even helpfull to know where such an item came from or got recovered.
We still have plenty of codes we are clueless about.
As a small example: Once I found a completely unmarked rifle grenade in Angola (spigot type, HEAT as for the design features) which I could not identify by any documents available to me at that time. Little later I've seen exactly the same grenade in the UN demining school (near Luanda the capitol) in that country and was curious to hear from the French EOD detatchment there what it was. They said they have no clue but would really like to know. I asked where the propelling cartridge was which was inside trhe shaft before (secured by a rubber plug as often done) which would have told us by it's head stamp where it came from. They said they disposed of it since SAA does not matter to them. So this is why even slightly related thing matter for identification.
After that it took me more than 10 years to find out is was a Chinese rifle grenade.
This story is not 100% related now but I tried to visualize how important the whole image is for a positive ID (or an educated guess). A bare code-# is just a mosaic.
Sorry if I bored anybody or sound like a smart ass.
One of my major interests is researching factory codes and logos...