Vintage lighter restoration?

I've recently come across some very sentimental lighters. They were owned by my grandfather who passed nearly 20 years ago. I know very little about them except for a few markings. They are made in Japan and have "SKKK" on the underside, with three stars adorning the initials.

I assume these lighters are fairly cheap and common, but they have great personal value to me. The flint is gone and the wicks are almost nonexistant.

I've done a bit of searching to find someone who would be able to restore them and put them back into working condition, but I havent found anything too promising.

Do any of you Gorillas have experience refurbishing old lighters?