Looks like a clone. It's about $15 US, about 1/3 of the price I'm seeing from Digikey/Mouser. Might still work, but can never make a guarantee. CAPS LOCK IS CRUISE CONTROL FOR COOL
The 6 pin header protrudes out a few millimetres more than my genuine PK3. The red silk screen background is missing in the Microchip logo. The "POWER", "ACTIVE", & "STATUS" labels are all bolder text than the original.
Latest test project, an LED matrix display made from one reel of addressable LEDs. here