This board is silkscreened as 1986. It's not an original Apple IIc. The first Apple IIc came out in 1984 and has a 1983 copyright.
You can see a connector in the upper right. This is for a memory expansion card. Older Apple II motherboard have socketed memory chips that all need to be replaced for upgrades.
Above the copyright, you can see the 65c02 CPU.