I think it has a little gradient, gray line inside, and white outside, main color is light gray, font is SignPainter. Please help me out, I've been trying to figure it out how to make it exactly how it is.
I replicated the effect decently with layer styles. It might have been done in Illustrator originally
Here's my approach step-by-step:
1. Type out your text and apply a small dark grey stroke and a subtle grey-to-white gradient to it.
2. Group the layer (Ctrl+G) and add a slightly thicker and slightly off-white stroke to that group.
3. More groups! This time group the group the you created in the previous step and add a drop shadow to the newest group.
Footnote: Obviously this doesn't look exactly like the picture you linked, but just tinker with the sliders and numbers till you're happy and you should be fine.
EDIT: So I found a way to at least mostly fix the antialiasing problems. Simply duplicate the actual text layer, disable the stroke of the new layer and put it below the original text layer. This will ease the edges to be more smooth.