Rating:

The two 50g weights did not exactly match up when weighed on the new 200g scale. Close enough maybe, but I wish they matched.

They were received quickly and came at an affordable price, but I can't count on having an accurate calibration check on my scales. I don't think there is any traceability for the calibration accuracy of my weights or of my scale, and I DID know that before my purchases. I should have looked longer for something certified for legal use in trade. Going forward I should probably stick to buying only coin tubes or flips from Coin Supply Express. I have the feeling Coin Supply Express is basically a good distributor, but don't expect a Cadillac for the price of a Chevy (not that I really expect a Cadillac to be a good standard of quality either).