Gigabyte GA-586HX Rev. 1.55 i430HX chipset Socket 7 AT motherboard with 4 16-bit ISA slots, 4 PCI slots, and 512K cache.

NOTE: needs a new Odin CMOS/RTC module.  You can repair these with a new battery (the info is out there on the web) or replace it.  On the plus side the module is socketed for easy removal. 

Intel Pentium-S 133MHz CPU with fan and heatsink.

and 16Mb RAM

For more info on this motherboard: https://theretroweb.com/motherboards/s/gigabyte-ga-586hx-rev-1.54-1.55-1.56

This board scores a respectable 9.4 out of 10 on The Retro Web's motherboard grading system.

Pickup from Cairnlea (a western suburb of Melbourne) preferred, or I can post at buyer's expense.