Finally. After Brian is born, I'll know what to do with the Myrrh.
I'll take the gold.... But frankincense too has been used in varnishes.. Like myrrh their use has been mainly in wood varnishes for string instruments (from violin to double bass). Stradivarius is said to have used propolis in some of his varnishes.
Among the natural resin varnishes I tend to favor for photographs those based upon dammar (and beeswax to maniplate the "texture" from glossy to matt) and amber.. These are, however, less than ideal for--- and many completely ill-suited or incompatible to--- resin (plastic) coated papers.