P3 Rgb Pixel Panel Hd Display 64x32 Dot Matrix Smd2121 Led Module Indoor Screen Full Color Video Wall 192x96mm Message Board - Led Displays - AliExpress
64x32 RGB LED Matrix - 5mm pitch : ID 2277 : $49.95 : Adafruit Industries, Unique & fun DIY electronics and kits
64x32 RGB LED Matrix - 2.5mm pitch : ID 5036 : $39.95 : Adafruit Industries, Unique & fun DIY electronics and kits
RGB-Matrix-P3-64x32 - Waveshare Wiki
Amazon.com: RGB Full Color LED Matrix Panel 64x32 Pixels, 2048 Individual RGB LEDs,Adjustable Brightness,4mm Pitch, Displaying Text Colorful Image Animation Chainable Design Compatible with Arduino/Raspberry Pi : Electronics