San Marino 1931 Air Post Stamps

Descri.	Values
Three feathers	all

50c 12x12 Blue green Three feathers	80c 12x12 Red Three feathers	1L 12x12 Bister Three feathers
2L 12x12 Bright violet Three feathers	2.60L 12x12 Prussian blue Three feathers	3L 12x12 Dark gray Three feathers
5L 12x12 Olive green Three feathers	7.70L 12x12 Dark brown Three feathers	9L 12x12 Deep orange Three feathers
10L 12x12 Dark blue Three feathers

Image	Value	Perfor	Color	PR	WM	Ovpt	Catalogue Numbers
Image	Value	Perfor	Color	PR	WM	Ovpt	SC^[1]	YT^[2]	MI^[3]	SG^[4]	UN^[5]	SA^[6]	LD^[7]
	50c	12x12	Blue green	45.000	S	N	C1	A1	165	164	A1	A1	SAN 37-1
	80c	12x12	Red	30.000	S	N	C2	A2	166	165	A2	A2	SAN 37-2
	1L	12x12	Bister	40.000	S	N	C3	A3	167	166	A3	A3	SAN 37-3
	2L	12x12	Bright violet	25.000	S	N	C4	A4	168	167	A4	A4	SAN 37-4
	2.60L	12x12	Prussian blue	12.200	S	N	C5	A5	169	168	A5	A5	SAN 37-5
	3L	12x12	Dark gray	11.788	S	N	C6	A6	170	169	A6	A6	SAN 37-6
	5L	12x12	Olive green	15.500	S	N	C7	A7	171	170	A7	A7	SAN 37-7
	7.70L	12x12	Dark brown	12.500	S	N	C8	A8	172	171	A8	A8	SAN 37-8
	9L	12x12	Deep orange	12.500	S	N	C9	A9	173	172	A9	A9	SAN 37-9
	10L	12x12	Dark blue	9.500	S	N	C10	A10	174	173	A10	A10	SAN 37-10