Watch List notes:

Canada, Victoria, fifty cents, 1871, diademed head left, rev. crowned denomination within wreath of maple leaves (KM.6), certified and graded by NGC as About Uncirculated – Details – Cleaned
*ex. Portland Collection, Baldwin's of St. James's, Auction 57, 14 April 2021 (lot 204)
The present cataloguers dispute the appendage "Cleaned" – it is simply a coin that has seen some degree of circulation

Estimate: 250 - 350 GBP