Looks to me to be one of the older PT-40 kits.
Things that give it away:
1) The elevator goes through the rudder. My father and my sister both had one of these and I remember the tail feathers. My sister still has hers.
2) The stringers in the wings look exactly the way the kit looked.
3) The rounded fake windscreen should be a solid block of balsa. Doesn't look like any other trainer on the market now.
4) The ailerons do not extend all the way to the wing tip as on most other trainers.

Note that this is the KIT, not the ARF version that GP sells now. The new PT-40 looks slightly different.

-Steve