Watch List notes:

PORTUGAL:LOT of 74 billon medieval dinheiros of Dinis I (1279-1325), apparently many varieties here (as in Gomes); average or better circulated condition, with some much better, and 5 culls, perfect for a dealer or a specialist, retail value $1650, lot of 74 pieces. Though Gomes states that these are .833 fine silver, these look like billon to us.

Estimate: 400-550 USD