The Numbers on the Keypad enabled people to witness Secret numerical codes used in Songs. Patterns could be made on the Keypad that assisted Composers.
The Two below have ICBM Ear holes & English Crown having Crucified positions of Ireland Left & Wales Right on the newer in Trident form, meaning the Scotch had a Shit. Trident means try a dent The first was made robust for my trek in Eastern Europe. Something to do with Weapons checks.
6210 & 6360