Check for the correct display/panel part number

Check for the correct display/panel part number I've had the display my 2017 iMac replaced at a shop and according to the receipt the correct part LM270QQ1 (SD)(C1) should have been installed. Unfortunately, it has several issues that make me question this:
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Guest [Entry]

"What I can tell you is the Apple P/N for your systems display is 661-07323 and the marking on the display should be LM270QQ1 (SD)(C1)

The 2017 has a brighter NITS screen than the 2015 which is Apple P/N 661-03255 the display is marked LM270QQ1 (SD)(B1). It had its issues! Ghosting being a big one

LCD panel with image persistence (ghosting) when left static for periods of time.

Now you’re is a no win position here! To validate the part you need to check its markings on the back side of the assembly

But the act of getting to it offers the shop an out as you invalidated their warrantee!

You also risk damaging the display just in the process of taking it off, if you don’t have the needed skills and tools, review this guide iMac 27"" 2017 Display Replacement"