Early low trim radio delete plate...keep or?

So my 69 dart came with this radio delete plate. I know there are cars out there that are rare and need this plate.in My intro thread someone indicated they are valuable. I also want to install gauges. So, should I sell and swap for a more common radio dash plate and install gauges or leave it be. What do these usually go for ? If this can offset some of the project cost and help someone out, my team is considering it. Thanks
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