Good Light For Pix?

I suspect they'd work OK. A little dim at 40w equivalent; you'd probably need two. A19 is the "standard" bulb size, meaning you'd be a little limited in terms of getting them close to vertical above a coin, the appropriate placement for lustrous silver. I'm a fan of the smallest, most sharply-focused bulbs possible. They offer the closest placement to the lens, and you can always diffuse them. The linked bulb would be kinda diffuse by nature, and it would be tough to make it any less so.