I'm on the hunt for this specific motherboard, an MSI MS-5145. It's a Socket 7 board with the Intel 430TX chipset. I've never seen one available but it was shipped inside the first PC my family bought when I was a kid, so it has sentimental value 
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MSI MS-5145 (TX1)
MSI MS-5145 (TX1) is a motherboard based on the Intel 430TX (PCIset TX Triton II) chipset. Get specs, BIOS, documentation and more!