3 months old plenty of test left perfect condition 3000 Psi bottle with Pi Marked Reg. i don't think you need pics of this but if you do just ask and i will send then to you.
iv looked allover the reg and on the net and on fatbobs where i got it from i cant seem to find out.
i have had it on a proto pmr a slg ulralight now iv got it on my invert mini
maybe this will help you