What type of lighting or filter does this Ebay seller use to get this "razor sharp" effect?

Does anyone know what I can expect from this seller? 100% positive feedback. Thanks.
https://www.ebay.com/itm/186023505571?hash=item2b4fdd6ea3:g:v2EAAOSw4qFkz~nU&autorefresh=true
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id say its a very expensive cleaned 1849 penny but its nice
he has customers who say very good thungs about him
I have a clip on lens I use with my phone, it takes similar sharp photos. Apexel 100mm macro lens


http://www.pcgs.com/SetRegistry/publishedset.aspx?s=142753
https://www.autismforums.com/media/albums/acrylic-colors-by-rocco.291/
Seller takes quality photos not sure of the equipment used. You should question if the coin is AT or NT. The seller has a large inventory of colorful cents.
It looks like a single light source from the top at a pretty low angle to create bright highlights on top and dark shadows on the bottom.
Probably a ring lamp.
It could also be an HDR image constructed from multiple images with different exposures.
The pictures the seller has of slabbed coins shows a reflection of the light he’s using and shows the position of the light


The positioning of the light appears to be the same in all his auctions
Mr_Spud