Corrected entry: In some of the shots where Westley and Inigo begin to duel, one can see what appears to be a leftover 'practice' sword with a black glove on it sticking into the ground. It first appears in front of Inigo's stomach as they begin to hit swords.
Hans Deutsch
19th Mar 2003
Correction: That is not a practice sword, it is Westley's scabbard.