Age Value of Ferguson Tractor

Greetings:

On a recent trip to western NY our friend showed us an old tractor and I agreed to do some internet research to try to determine its value.

The placard said "Harry Ferguson, Incorporated"
The sn is 104349.

My confusion arises from the fact that the ytmag serial number data shows 3 models which have a sn within this range:

Ford Ferguson year 1942 (sn92363) to 1943 (sn197755)

TE-20 year 1949 (sn77773) to 1950 (sn116551)

TO-30 year 1952 (sn72680) to 1953 (sn108645)

I have a photograph. Will that help you help me?

Sincerely,

Phil McClurg
Tucson, AZ

The Harry Ferguson, Inc tractor serial number does have the "TO" in front of the serial number:

TO-104349

Please advise where should I tell the Owner where to look in order for her to determine if the engine is Continental or standard.

Is "standard" a brand name, or are you using the word as a common description?

Thanks for your help.

Phil McClurg