Rare Vintage Jan Blenken Maxitoys Sheet Metal Yellow & Black Water Fire Truck Tanker - or maybe a Oil Tanker? 

Made in Netherlands.  Old-Timer Models

As found in fantastic condition (just a little dusty as it sat on a shelf untouched for many years). One of the 4 wood wedges that fits under the tank is missing (looks hand carved and relatively easy to replace on you own if you really wanted).