m8303 = steel faber
02/0070/07001 02 + most likely serial numbering... (did you mean to put the 01 02+ in this part also?)
01 02+ = initial hydro date Jan 2002. the + indicates it can be overfilled by 10% per regs.
tc- TC is Transport Canada.
3aam 3AAM is the Steel type 3AAM (3AAM is Chrome Molybedebum Steel (metric))
dot-3aa = DOT is US Depart of Transportation.
184 is I think 184 bar (pressure rating for Canada. metric)
2400 = service psi 2400psi for DOT/US
ree 73= the expansion units for plus rating with next hydro. (it's to tell him how much it can expand)
might be a LP95. Faber is not the best at putting volumes on tanks. If you give exact measurements of height (to top of tank, not valve) and EXACT diameter, folks here can narrow it down.
He might have paid $350 for it, but doesn't mean it's worth that. (you can buy a NEW LP95 from Worthington for $300 for example. ) The above tank needs re-hydro, new vis, and if used for partial pressure blending, will need an O2 cleaning after hydro.
Offer him $100 bucks for it since you're about to spend up to $50 on hdyro, vis and cleaning.