My first was a german ww2 plane back when I was 4 years old.  My dad sat me down and helped me build it.  I still have one model I build back when I was a kid.  It was a space 1999 hawk from MPC.  This model is a good 32 years old, and unbroken.  No paint, just decals.  I am not sure where it is, but I had it out just a month or two ago. 

I did a quick search, and couldn't find it, or I would post photos, but I did find a box of models I built 15 years ago, so thank you for this thread, I might post photos of them soon.