Tecumseh went belly up some time ago.
One of the companies Tecumseh bought out Launsen ? bought back much of the business and is supplying some parts.
Stens, Oregon & Prime Line all do aftermarket coils from reliable sources.
Farmer Tech is an OEM suppler to Tecumseh so their stuff is good if bought from Tecumseh or a real store that you can walk into.
My wholesaler gets his from Italy, but the box is labeled in Italian so I can not understand most of it.
Jacks small Engines , a company I buy a lot of parts from lists them at $ 37 US so any one who is selling at less than 2/3 of this is peddeling reject parts.
Most small engine repair shops will keep them in stock as it was a very popular engine and the coils did not change for 40 years.
Unless they are a Tecumseh now called LCT agent you will get an aftermarket part of good quality.
Because profit margins in China are so small, there is no such thing as a scrap part.
What the original purchaser rejects gets on sold to some one else and ultimately ends up on Ebay or Amazon or some other fake shop that only exists in cyber space.
Avoid any coil marked as Universal as they are exactly what they say , Universally will work badly on whatever they are fitted to , for a while.
Not a recommendation per say, but this place ticks all the boxes.
part is not too cheap to be true
is a real shop with a street address
http://www.chainsawpartsonline.co.uk/tecumseh-34443-14160034-ignition-coil-fits-most-engines/