S2572 im Greek Cross, Larger bust 5th issue. There appears to be a faint trace of the tail of a 7 extending from the lower serif of the 8. So possibly a 1578/7.  The fifth issue started in 1578 and featured at slight decrease in the purity of the silver coinage from sterling fineness (.925) to .921.  Cleaned at one time and now naturally retoned . NGC XF details cleaned.

NGC 2925468-003