Abstract: An improved coin processing apparatus is described. The apparatus includes a coin sorting arrangement having an adjustable baffle means which provides a constriction to air flow for establishing coin restraining pressures in a chamber of the apparatus. The baffle means includes a resilient sealing body having a cross-sectional configuration which can be adjustably varied. Expansion of the cross-section reduces the size of the constriction and increase a pressure gradiant between upper and lower sectors of the chamber. Alternatively, contraction of the cross-section enlarges the size of the constriction and reduces the pressure gradiant between upper and lower sectors of the chamber.