Great find, Steve. Borsalino names are often a crazy rabbit hole investigation, most often leading to their wonderfully inventive imagination.Echter Borsalino "Sandurbar", Point 6 1/2, Open Crown 16 cm 6 1/4 inches, Brim 7 cm 2 3/4 inches, possibly late 1920s early 1930s. The "Ossido" color Felt is of medium weight, has a very soft hand and easily hand creases. There was a Wind Cord at one time and the Crown Tip Patch is missing but there are some glue remnants. I searched "Sandurbar" and it appears to be a port in the Western India State of Goa on the Arabian Sea. I think the name is out dated because there were only a few mentions and they were from the early 1900s.
Can see faint remnants of the Crown Tip Patch.
The Paper Label is Type 1 but small in size 5 cm X 1 cm.
Open Crown