Currently unique, this coin is
unpublished in R/L and L/R. The final digit of the date is
unclear, it appears to be 9/6. If the date were 1666 we would expect
that all three of the 6 characters to be made with the same
punch. The final character in the date here is from a
different punch, and the leg of the 9 is longer than the leg of the
6. It looks as though the final digit was a 9 punched upside
down in the shape of a six and then rotated 180 ° and punched
again. Also, it seems to us that if the date were 1666 that
the final digit would not have been punched upside down as the die
sinker would not have had to switch punches, he could have just
hammered the punch three times in a row. If the date is not
1669/6 then it must be 1666/9 as the final digit contains both a six
and a nine.
The assayer mark is PRS without the "O"
which was generally used by Pedro Ramos. We believe that the C
& T listing type 91 number 436d (PRS 1666) and that both Cayón
numbers 6955 (PRS 1666) and 6959 (PRS 1669) are all three references
of the same coin illustrated here.