Difference between New Holland 68 and 273

I'm new to this forum but in doing some searches, I've found it very useful.

Last fall I purchased a NH 68 for $100. I was told that the knotters needed some work. I haven't had a chance to try it out yet.

Well, the other day I was at an auction and purchased a 273 for $300. It is bigger and is in a lot better condition that the model 68 I had. Also, the owners said it was used a couple of years ago.

Anyway, what is the major differences in the two.

Another question, how can I find how old each of these balers are? Get the serial numbers and contact New Holland?

Thanks

I wanted to know how old each of these balers was, so I called New Holland.

Well, the 68 model's serial number wasn't even on their files, but they said they were made from 1956-1958. Is that true? I've seen a model 68 advertised as a 1980 model.

Also, the number I gave her for the model 273 came up as a model 100-92, and it was made in 1991???? It says model 273 right on the same plate that it lists the serial number. It is a Sperry New Holland...would that have anything to do with it?

That doesn't sound right at all. Any body else have any ideas? I'd like to know how old these balers are as I plan on selling one of them.

Thanks again, for the help!

I have a 68 and it has a three-joint power line, two joints near the front end and a third joint where the line attaches to the flywheel. The flywheel joint doesn"t assist with turning so maybe this design is really called a two-joint power line. Comments anyone?