British Trade Dollar Year 1901 (Unique overdate)

British trade dollar 1901 also has 3 varieties.
It recorded a total mintage of 25,684,791 from Bombay mint,
While 1901 C from calcutta mint recorded 1,513,685

The 1901 B is the common type
The 1901 C is the rare type with fewer mintage.
The third type is 1901 B over 1900 which has unknown mintage, this is also rare

Variety 1: British Trade Dollar 1901 B
This is the common type from Bombay Mint
The B can be seen at the center of the prong
This is commonly seen in the market

The NGC Au details 1901 B coin.

Variety 2: British Trade Dollar 1901 C
This is rare type, but still able to be found in open market
It fetches a higher price.
The C is located at the side of the Britannia and the shield

A high grade 1901C. C mint mark can be seen clearly

Variety 3: Over date 1901 B over 1900
This is the rare type.
It is harder to find in the market, but still relatively easier to find if compared to other overdates coin.

shadow of old 0 on the 1 (4th digit)