That does look like orange shellac. My kitchen and family room are knotty pine and covered with orange shellac. It's not a very long wearing finish, but very easy to match and touch up. I have made several major renovations to my kitchen and other than a few screw holes left from moving a few hinges, you can't see what is different. The original wood was actually fir, which has a kind of pink tint to it. I found that a thin coat of MinWax Ipswitch Pine stain, followed by several coats of orange shellac made the new look like the original.
It's always best to experiment a little, but this is what I came up with.
Central North Carolina