Many thanks to all for their responses.
It appears that the obverse is certainly a VAM 16 B. The presence of the threadlike die impression in front of the eye in addition to other markers appears definitive.
The concern is whether or not the reverse of the subject coin matches the two images shown on the webpage for VAM 16 B.
Below is an image of the area on the subject coin that contains the area shown in the image of the VAM 16 B of the VAM webpage. As one can see, the subject coin image does NOT contain the die scratch shown on the VAM 16 B VAM webpage.
Below also, is an image of the position of the mintmark in the VAM 16 B webpage. Note that the mintmark position appears to be considerably above the low threshold line. This does NOT match the position of the mintmark on the subject coin, which touches the low threshold line.
I hasten to add, that the above “evidence” may be flawed. The subject coin is not mint state. Wear, die erosion etc., may have erased evidence of the die scratch in the VAM 16 B webpage image from the subject coin.
Although great care was taken in imaging the mintmark position of the subject coin, it may not have been enough care.
Without additional reverse image evidence to the contrary, it appears I am obliged to assume the subject coin to be an example of the VAM 16 B.
Thanks once again to MarkyB, Uncle Bingo, keilg1 and messydesk for their much appreciated responses and thoughtful analyses!

- Die scratch area of VAM 16 B webpage image.
- DOLLAR1884OLOT662C058REV7.jpg (105.86 KiB) Viewed 278 times

- Mintmark placement of VAM 16 B webpage image.
- RBF1884-OV16B-7.jpg (164.09 KiB) Viewed 278 times