1981 Boss PH-1r Phaser, This is one of the most legendary phaser pedals in the world. It was designed to phase much like you would hear a Leslie speaker. No digital modeling here, just the storied analog sound. This pedal has a silver screw, Black label, and the P in PH-1r is under the “s” in Phaser - consistent with the earliest models made. The serial number stamp is 0300 indicating it was made in Feb 1981. Inside it contains the NEC c4558c chips. I am the only owner of this pedal and I probably bought it in 1981 or 1982 at Nelson’s Music in Victoria, BC. Firm on the price. $450