Please note I'm NOT an expert on toys at all, so all this information is just my opinion, you'll have to be the judge of this fantastic item for yourself. This I believe is an ERTL dually dump truck, that when you hit the lever on the bottom, the bed opens up nice and slow, it's super cool and very well made. This truck is made of  metal and plastic. I don't know what year exactly this was made, but I think it was between the 1960s -1980s , that's just a guess.  this is a fantastic dump truck, that is definitely made in the USA, which is fantastic. This item was found on the east coast of the United States the Maryland area to be exact. This is exactly the way I found this item, I did not try to clean it up in any way whatsoever. I think this is a fantastic find, and I think it we'll clean up really really nicely, if that's what you choose to do, or you can just leave it alone and add it to a really cool collection. This  dump truck is approximately 13 inches Long, by  8 inches high, by approximately 5 inches wide, and when you open the bed up it's approximately 10 inches high, which is super cool. I do have a lot of toys and other collectible items, so if you like collecting these fantastic items, please save me as a seller. Please make sure and take a look at ALL the pictures ,and if you have any questions at all, or need more pictures, feel free to contact me. Thank you so much for looking and good luck.