do i really have a jdm motor?

Ok so heres the deal, i bought my prelude a while back, i was told that it had a jdm motor swap... how do i know for sure? Ive been told that if its an actual jdm, that underneath the H22A stamped on the motor, there will be numbers also stamped. But having never looked that close at another H22, i wouldn't know.

if there's a number after the H22A (i.e. - H22a1, H22a4) then that would be a USDM, with no number H22A <~~~JDM

ok that helps alot! thanks, i guess i do have a jdm motor then