Unfortunately, that is the only place that they put the serial number.

If you crawl under the tractor, you can usually find a casting date on the bottom of the transmission. It is usually cast into the front frame on the inside, but it can be hard to see with the engine in the way, and the dirt and so on. Those dates might help with narrowing down when it was made. There was usually a couple of months between the casting dates and final assembly.

What is the serial number on the engine tag? Since there were only 383 Oliver 2050s made, it may be possible to find your build card based on the engine serial number. They always wrote the engine serial number on the card. You could try contacting the Floyd County Museum and see if they would be willing to do this search for you, but I'm sure it depends on how busy they are. As long as your tractor has the original engine block, the card would tell you your tractor's serial number. You can email the museum at <!-- e --><a href="mailto:fchs@fiai.net">fchs@fiai.net</a><!-- e --> to see if they can do this search for you. Let us know what you find out.