Sentence:  It's absolutely possible to find an affordable ($20-$35) low to average circulated Spanish silver <WSD>cob</WSD> dated around or before 1692, especially if you're willing to settle for the smaller half real or one real <WSD>cobs</WSD>. 
Meaning of the word marked with <WSD> tags:  Any of the gold and silver coins that were minted in the Spanish Empire and valued in reales or escudos, such as the piece of eight—especially those which were crudely struck and irregularly shaped.