This is a rare little brass antique laboratory sieve with the original identification plate on the side.  Particle size strained is 420 microns.  Brass would likely polish nicely, but we have not attempted to clean it in any way.  Please email any and all questions before bidding or buying.   Buyer will pay the Actual Shipping Costs based on the Size, Weight and Destination of the Package.  Thanks for Looking, and Good Luck!  KL 01/10/22.