Watch List notes:

BYZANTINE EMPIRE. Leo IV, 775-780, with Constantinus VI. Solidus 778-780, Constantinople. (LЄOn VS S ЄÇÇOn COnST)AnTInOS O NЄOS Crowned figures of Leo IV on left, bearded and Constantinus IV, beardless, seated on lyre backed double throne, both wearing chlamys, cross above. Rv. LЄOn PAP/ Con(STAnTInOS PATHR) Crowned busts of Leo III and Constantinus V, both bearded, facing, each wears loros, cross above. 4.17 g. Sear 1584. DOC 2. Tight flan. About extremely fine.
(~€ 700/USD 810)
Purchased from Frankfurter Münzhandlung E. Button, Frankfurt a. M. in 1971.