Big Bag of Old Clay Marbles-reserved for KS abstract drawing I really have no idea

I really have no idea

13" long x 9 1/4" deep x 4 1/2" tall

Wijk aan Zee and Zandvoort

It measures 4 1/2" tall x 1 1/2" wide

used for blending watercolors and applying gesso

Big Bag of Old Clay Marbles-reserved for KS abstract drawing I really have no ideaI've really fallen in love with these old clay marbles, and, having sold my first batch, was happy to come across this big gray corduroy bag filled with a whole bunch of them. I'm not an expert by any means (I'm am just obsessed with how beautiful they are), but am certain these are well more than a century old, and it's possible that some of them date to the 18th century. I'd pour them into a pretty bowl and keep it nearby; these are pretty