Apple II Revision 3 Motherboard Wanted - 1978

I have almost everything finished on my Apple II. I had the keyboard repaired, which involved replacing 90% of the keyswitches. Well, most of them were missing, so that's a no brainier. I also had to locate 22 keys to replace the ones that the keyboard had missing, which was not easy to find.

Now, I need to find a revision 3 motherboard, with a date code of 7848 or 7849. Thank you Jennifer for your help narrowing down these dates.

If anyone has a revision 3, near the above dates please let me know.