Google image-search works for identifying all sorts of things. I recently sorted through a large collection of vintage coins from around the world, and there were many that I couldn’t make heads or tails of (!). Let Google have a look, and the consensus of the search results tells you what it is, e.g. a 1936 Ethiopian 25-santeem coin.
My conclusion has been that there is no perfect cart. I have a construction wheelbarrow and a four-wheeled nursery cart that dumps and a two-wheeled dolly contraption that has a cradle which holds a muck bucket or a bale of hay, and between them I get most carrying done.
Did you add the wheels yourself or have it done? If so, that would be a really good one. I recently noticed someone struggling with some kind of manual transportation device. I don’t remember the specifics (groceries, construction materials, etc.), but the point is that the person was struggling to guide it over rough terrain, and it was obvious that the small wheels were the problem.
One trick that a lot of people don’t realize it’s that it’s monumentally easier, at least in those situations, to pull the cart instead of pushing it. When you push it, in addition to pushing forward, you’re also pushing down, driving it further into the terrain it’s trying to ride over the top of. OTOH, if you pull it, in addition to pulling it forward, you’re also pulling it up, helping to lift it over all those bumps.
A situation where I see that all the time is deliveries coming into my building. The door has a threshold and I’ll constantly see people struggling to push a hand truck or other cart over it. If they turn around and pull, it’s a whole lot easier.
My Dad had one of those at his farmyard in his later years. He absolutely loved it. I tried to buy it at his auction, but was outbid. (Yes, I’m somewhat of a cheap bastard)