The Massey Ferguson tractor with the serial number TEF 506105 was manufactured in 1966. The TEF model series was produced from the early 1960s to the late 1970s, and this specific serial number helps pinpoint its production year.
According to this website, it would have been in 1953: http://www.fergusonenthusiasts.com/serial%20numbers/SNRanges_1946_1960.pdf
On a Ferguson TEF-20 tractor, if the data plate is missing, the serial number can typically be found stamped on the engine block, usually on the left side near the front. Additionally, it may also be located on the transmission case, often near the gear shift. Checking these areas should help you locate the serial number.
Telefonica SA (TEF)had its IPO in 1988.
As of July 2014, the market cap for Telefonica SA (TEF) is $75,000,885,177.28.
Du-agh-mu-tef
try roundup, its cheap and effective
Dumatetaf Du Me Te Tef
Tylon Scott goes by Tef, and Teflon.
EA and TEF can sometimes be diagnosed in fetal ultrasounds before birth. If not, these defects become obvious soon after birth, because the infant is unable to eat. The inability to pass a tube from the mouth to the stomach.
EA/TEF is reported to occur in about 1: 4500 births
If you are asking if Henry Ford was related to TEF, the answer is no, based on my research. Correct me if I am wrong.