Silver, date and mint mark not discernible, guessed by local antiquities dealers to possibly date to around 1700. Badly worn by sand scour, no more found. Anglits fishing pier, Lauderdale-By-The-Sea in "all that stuff being pumped ashore by the dredges". Best my bad eyes can make out...
On making things larger so old eyes can see 'em...With Google Chrome: right click on the image- select "Open image in new tab" - switch to new tab- click on the three little dots on the RH end of the upper tool bar- click on zoom and blow it up to your heart's content!