Nice Tanks!!!
For Die Cast, I've collected small matchbox sized construction vehicles since.. geez, I was 10.
I'll take a pic of them and show you what I have.
I FINALLY found a road paver.. to find one of those in a 64 scale is near impossible!
Most of my Construction vehicles are made by Tomica. Also known as "Pocket Cars" in the USA sold in the 80's. Don't know why, I just love those. Tomica have amazing detail!!