I actually got a little worried as System Information (and Coconut) was showing a lower than expected full capacity but once it fully charged it came up to where it should be and the health is 100%.
How did I know it was an OEM Apple battery? The markings/labels are pretty distinctive, the new one matched the old one perfectly.
Old battery before removal
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New battery installed
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New battery before install
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The battery came with a set of screwdrivers for the install also, though I have all the tools I need.
System info showing battery health before replacement
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System information showing new battery health during initial charge
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Coconut Battery showing the health during initial charge
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System information showing battery info after initial charge, showing updated full capacity
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Coconut Battery showing the updated health stats after the full charge.
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Oh yeah, I also did SMC and PRAM resets just to be safe...