Here`s catalog value for the triangle shaped Lithuania airmail
(this is Michel 2005 CV in euro, Scott values are lower! Important: this is
catalog value, and if you`re not aware yet you`ll soon find out that market value is something else

)
Lithuania 1932, set of 8 stamps, perfed or imperfed.
15 centu perfed used / 2 eur
20 centu perfed used = 3 eur
40 centu perfed used = 5 eur
60 centu perfed used = 10 eur
1 lit perfed used = 6 eur
2 lit perfed used = 5 eur
You miss the 5 and 10 centu values. Can`t tell their condition, you should check (missing perf, thin, tear, bad centering etc.).
It is an interesting set as it depicts historical scenes and if it makes you `google` a bit it will turn to be more and more valuable. You`ll find out for example who was Mindaugas, depicted on the 20 centu value
