I think that is a kra 3000 series, late 90's. I don't think that is the orignal drawer set up. Normally 4 drawer, 2 shallow, 2 deep. I had a kra 4000 just like it, but with ball bearing I bought new in 2000. KRA 3000 where slides, KRA 4000 where ball bearing. The KRA 2000 with ball bearing replaced the 3000.