Da Mina is a Pipe Shop in Cortina.
Via Roma 5, Cortina D' Ampezzo (Veneto)
▲ Pre-transition, "Four Dot", 1946 - 1979
Notice the change of "Sasieni" script initiated by Alfred Sasieni after second world war.
"Rustic" Sasieni Made 102 Made in England (Arched)
▲ Pre-transition, Duplicated two dots, 1930 - 1939
This model is listed in the 1939 Sasieni catalog, being omitted in the 1936 and 1943 catalog. Origin of briar : Algeria.
▲ Transition period, Lucite stem, 1979 - 1986
Other Sasieni transition pipes here
▲ (Left underside)
Sasieni 4DOT Ruff Root Dark Made in London (In circle) F, 5
Post transition, 1986 - today, "4 dot"
Ruff Root: Name for a sandblasted finish
Notice the 4DOT stamping replacing the FOUR DOT after 1986.
Concerning Sasieni the four dots may be grouped into two different ways on the stems:
It should be noted that the brand also produced models with the four dot losange logo duplicated on each side of the stem