Here is a link to a sales site out on the web. They list several lots of "antique" MOP sets, most of which are just shapes. How does one know, if there is no marking, design, etc. that they are from the late 1800's?

Can these be new?

Just curious. Thanks, Jim

http://www.french-treasures.net/Mother-of-Pearl_147/Set-of--Mother-of-Pearl-Gaming-Chips-ca-1880_387.html