JD450 - what model and year?

I have just come across this website and find it very interesting.

I recently purchased a used older JD450 and would like to find out more particulars about it. It is a crawler loader and has hydraulic winch attachment on the back.
Model type: T5E3M
Seril #0709551
Can anyone tell what the year of manufacture is and what would be the model designation (eg: JD450 what?).

Thanks in advance for any information - will be much appreciated.

John

From comments so far, it looks like mine is a 1966 or later model.

I have the high-low and reverse on the floor between the two control levers. On the left hand side I have a four speed reduction gear shift lever. On the right hand side I have the controls for the bucket, Also, on this model, on the right hand side (outside) I have the controls for the rear hydraulic winch (which works well).

I am trying to put together some information on this machine as I go along. Everything works, though the past maintenance is sketchy at best - a lot has been ignored. I do have a basic operators manual that gives basic maintenance items and capacities etc. I am about to plumb in an inline engine block heater for the coming winter - previous owner used ether on a regular basis it seems. I want it to start without the gas if possible, it can always be used as a last resort.

Anyway, back to the basic question of year of manufacture and model designation. It seems it is a 1966 or simiar year. No model designation other than JD450.

If anyone else can supply more information I would be grateful.

Thanks in advance,

John