Project Khopesh has a Kickstarter campaign going strong for their new Tinker Gearcoins. They’re more than 3x funded, so go check ’em out.
From the campaign:
Tinker Gearcoins are a series of metal gaming coins, made of a zinc alloy and plated with a variety of metal finishes. They are 3mm in depth and varied diameters, from 18mm to 36mm, and they weigh from just under an ounce each. They are solid coins, with a good heft to them.