11c - Light green, dark green or green
Flat Plate - Perf 11 x perf 10 (top or bottom)
Unwatermarked - Scott #511a - 1917

	NY Auction Houses
	MNH	MH	Used
Spring 2005	-	-	$2,700
Fall 2005	-	-	-
Spring 2006	-	$4,900	-
Fall 2006	-	-	$4,500
Spring 2007	-	-	-
Fall 2007	-	-	-
Spring 2008	-	-	-
Fall 2008	-	-	-
Spring 2009	-	-	-

12c - Claret brown
Flat Plate - Perf 11 - Unwatermarked - Scott #512 - 1917

				NY Auction Houses
	MNH	Graded	MH	MNH	Graded
Spring 2005	-	-	-	-	-
Fall 2005	$5-$7	-	$3-$4	-	-
Spring 2006	$5-$8	-	$2-$4	$900	98
	$36	85	-	$120	90J
Fall 2006	$6-$10	-	-	$375	95
Spring 2007	$5-$40	-	$1-$3	$850	98
	-	-	-	$2,700	100
Fall 2007	$6-$10	-	$2-$5	$625	98
Spring 2008	$6-$70	-	$3-$4	$700	98
Fall 2008	-	-	-	-	-
Spring 2009	-	-	-	-	-

12c - Brown carmine
Flat Plate - Perf 11 - Unwatermarked - Scott #512a - 1917

				NY Auction Houses
	MNH	MH	Used	MNH	Graded
Spring 2005	-	-	-	-	-
Fall 2005	$85	$3-$4	$2-$5	-	-
Spring 2006	$22	-	-	$700	98
Fall 2006	-	-	-	$280	90J
Spring 2007	$6-$14	$6	-	$500	95J
Fall 2007	$21	-	-	$260	95
Spring 2008	$18	$3	-	$210	95
Fall 2008	-	-	-	-	-
Spring 2009	-	-	-	-	-

12c - Brown carmine
Flat Plate - Perf 11 x perf 10 (top or bottom)
Unwatermarked - Scott #512b- 1917
Ten used and one mint known

	NY Auction Houses
	MH	Used
Spring 2005	-	-
Fall 2005	-	-
Spring 2006	$16,000	$10,500
Fall 2006	-	-
Spring 2007	-	-
Fall 2007	-	-
Spring 2008	-	-
Fall 2008	-	-
Spring 2009	-	-

13c - Apple green or pale apple green
32,300,000 - Flat Plate - Perf 11
Unwatermarked - Scott #513 - 1917

				NY Auction Houses
	MNH	MH	Used	MNH	Graded
Spring 2005	-	-	-	-	-
Fall 2005	$10-$25	$3-$8	< $1	-	-
Spring 2006	$8-$13	$2-$7	$1-$3	$1,150	98
Fall 2006	$7-$20	$1-$4	< $1	$450	95J
Spring 2007	$8-$30	$2-$5	$1	$240	95
Fall 2007	$5-$21	$2-$3	< $1	$260	95
	-	-	-	$750	98J
Spring 2008	$7-$16	$2-$4	-	$220	95J
Fall 2008	-	-	-	-	-
Spring 2009	-	-	-	-	-

15c - Gray or dark gray
Flat Plate - Perf 11 - Unwatermarked - Scott #514 - 1917

				NY Auction Houses
	MNH	Graded	MH	MNH	Graded
Spring 2005	-	-	-	-	-
Fall 2005	$10-$35	-	-	$900	-
Spring 2006	$8-$60	-	$15	$3,750	98J
Fall 2006	$35	85	$9-$12	$800	95
Spring 2007	$155	85	$8-$12	$300	90
	-	-	-	$7,500	98J
Fall 2007	$25	-	$8-$15	$160	90
	-	-	-	$260-$400	90J
	-	-	-	$650	95
	-	-	-	$2,000	98
Spring 2008	$21-$115	-	$10-$15	$625	95
Fall 2008	-	-	-	-	-
	$150	90	-	-	-
Spring 2009	-	-	-	-	-

15c - Dark gray
Flat Plate - Perf 11 x perf 10 (top or bottom)
Unwatermarked - Scott #514a- 1917

	NY Auction Houses
	MNH	MH	Used
Spring 2005	-	-	-
Fall 2005	-	-	-
Spring 2006	-	-	-
Fall 2006	-	-	-
Spring 2007	-	-	-
Fall 2007	-	-	-
Spring 2008	-	-	-
Fall 2008	-	-	-
Spring 2009	-	-	-

20c - Light ultramarine, deep ultramarine or gray blue
Flat Plate - Perf 11 - Unwatermarked - Scott #515 - 1917

					NY Auction Houses
	MNH	Graded	MH	Used	MNH	Graded
Spring 2005	-	-	-	-	-	-
Fall 2005	-	-	$6-$27	$4	$375	-
Spring 2006	$32	-	$14-$67	$1	$525	90J
Fall 2006	-	-	$17	-	$325-$900	95
Spring 2007	$40-$65	-	$16-$27	< $1	$190	90
	-	-	-	-	$750	95
	-	-	-	-	$2,500	98
	-	-	-	-	$4,250	98J
Fall 2007	$60	85	$5-$16	-	$725-$800	95
	-	-	-	-	$2,600	98
Spring 2008	$20-$100	-	-	-	$230	90
	$60	70	$10-$35	-	$700	95J
	$50	75	-	-	$2,200-$3,500	98J
Fall 2008	-	-	-	-	-	-
Spring 2009	-	-	-	-	-	-

20c - Light ultramarine
Flat Plate - Imperf between vertical pair
Unwatermarked - Scott #515b - 1917

	NY Auction Houses
	MNH	MH	Used
Spring 2006	$3,500	-	-
Fall 2006	-	-	-
Spring 2007	-	-	-
Fall 2007	-	-	-
Spring 2008	-	-	-
Fall 2008	-	-	-
Spring 2009	-	-	-
Fall 2009	-	-	-
Spring 2010	-	-	-

20c - Gray blue
Flat Plate - Perf 11 x perf 10 (top or bottom)
Unwatermarked - Scott #515d - 1917

	NY Auction Houses
	MNH	MH	Used
Spring 2004	-	-	$10,500
Fall 2006	-	-	-
Spring 2007	-	-	-
Fall 2007	-	-	-
Spring 2008	-	-	-
Fall 2008	-	-	-
Spring 2009	-	-	-
Fall 2009	-	-	-
Spring 2010	-	-	-

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