Mandarin Satsuma Silverhill

Satsuma mandarins are the most popular fruit eaten by the Japanese.
They have been grown commercially in the United States since the early 20th century.
This variety is a natural mutation, identified in Siverhill, Alabama, in an orchard of Owari Satsumas, and selected by Walter T. Swingle in 1931 for its exceptional resistance to cold.

Harvesting is fairly early, from November or December, and mandarins can be ripe while the rind is still green.
The fruit is juicy with few seeds and is easy to peel. They can be juiced as early as October.
Harvesting begins when the fruit is less hard and yields slightly to the fingers.
Once partially orange, the fruit is soft and sweet, with an intense tangerine fragrance.

The Silverhill tree is very vigorous, thornless, grows straight and can bear a lot of fruit.
It is the most cold-resistant of all Satsuma varieties.

References:
https://idtools.org/tools/1076/index.cfm?packageID=1179&entityID=8820
https://citrusvariety.ucr.edu/crc4072