Yup. Slab your own coins. The holders are in expensive as are the labels. Here is an example of some for sale. https://www.coinsupplyexpress.com/Certified-Style-Slabs.html
Thanks, different company. Hologram on my "self-slab-operation" is "Genuine" in small letters as on yours.
I don't remember name off the top of my head but that B is the logo of the company that makes the generic shells, not that of the un-named basement "slabbing service".
In this instance, the 1997 P JFK $1/2 you can be sure it is real. Since it would be a waste of time to fake it. And damage it to make it look more real [possible stupid description alert.]
Me I like the holders with the white insert, and sometimes with the black insert. There are some coins not worth sending in.