Bava Metzia 28: Lost & Found

More on distinguishing marks - and whether they are a Torah requirement or a rabbinic one. Also, how long must one hold on to a lost object? Also, pilgrims to Jerusalem could reclaim their lost items from a particular place. Plus, the formal lost and found location and process for the 3 pilgrimage festival - and why Jerusalem is special in this regard. Also, the process of declaring and proclaiming that you've found a lost object, and how Jewish history (and the rule of Persia and Rome) changed that process.