The photo is probably oversized in it's filesize, posting photos on Modern View is more forgiving, but there is still a limit of 2MB file size. On classic, it's 300KB. If you email it to me, I will add it to the post.
To take a stab in the dark, if it's a 50s trip bucket with round tubes, it will likely be a Freeman manufactured loader. Those normally have a plate riveted into the left front upper arm which will be faded, but punched numbers will be seen on the lower right and left corners. The lower left number is the model, and the lower right number is the serial number.