I'm can't really I.D. the red one ?? Looks like some sort of messed up swirl, I don' see a cork or anything Akro for that matter, so I guess we can disqualify at least a few manufacturers & narrow it down a little bit ?? So not seeing Akro, Pelt, MFC, Christensen, Vitro, Alley, MK.... were getting there but I don't believe we'll get a positive I.D. outa this one myself @ least not enough for me to go on !!