This is the Wrenn W5044 "Double Diamond" 6 Wheeled Tanker Wagon in Red/orange. This comes with the "Double Diamond" label glued to both sides of the body. Contrary to some opnion, a Tampo printed version was never produced by Wrenn, Basildon.Introduced in Period 3 this did not survive further than this period in production. I believe personally this is an under valued wagon, if you compare with how many examples are seen today. Comes complete with Period 3 box and Yellow plastic insert.

Condition of the Wagon/box is "near mint" for their age.