I think that is, in fact, a Smith, Harry; what looks at first (or, in my case, second) glance like the Tiger-like scooped upper bass bout characteristic of Doug's work at that time seems, on closer examination, to be an effect of the mic stand shadow. And to the best of my knowledge, Phil only had the one Irwin.
And, just to round things out, in the 2nd pic, Bob's on a Modulus; in the 1st, Jer has a '62 or '63 SG, and Phil one of his EBs (though Billy's cymbal prevents us from seeing from which one - I've seen pix of him with at least 3 different ones - and whether it was stock or modded). Can't tell what Jorma's playing, but it doesn't seem to be his usual 345.
Peter