11c - Light green, dark green or green
Flat Plate - Perf. 11 - Unwatermarked - Scott #511 - 1917

  NY Auction Houses
  MNH Graded MH Used MNH Graded
Fall 2005 $30 - $6-$11 $5 $575 -
Spring 2006 $5-$13 - $6 $1 $900 98
Fall 2006 $11 - - - $325 95J
- - - - $1,000 98J
Spring 2007 $40 85 $4-$6 $1 $170-$300 95
- - - - $260 95J
Fall 2007 $10-$30 - $3-$8 - - -
Spring 2008 $16-$70 - $2-$8 - $20 80J
- - - - $600 98
Fall 2008 $8-$9 - $3-$4 - $150-$350 95
- - - - $750 98
- - - - $1,800 100
Spring 2009 $6-$11 - $2-$6 $1 $575 98
Fall 2009 $8-$12 - $2-$6 < $1 $100-$130 95
- - - - $250 98
Spring 2010 $7-$10 - $2-$6 $1 - -
Fall 2010 $4-$16 - $2-$4 $1 - -
Spring 2011 $4-$28 - $2-$8 $1 - -
Fall 2011 $5-$21 - $2-$7 - $110 90
- - - - $75 90J
- - - - $1,300 100
2012 $6-$30 - $2-$6 $1-$3 $90 95
2013 - - - - - -
2014 - - - - - -
2015 - - - - - -
2016 - - - - - -
2017 - - - - - -
2018 - - - - - -


11c - Light green, dark green or green
Flat Plate - Perf. 11 x 10 (top or bottom)
Unwatermarked - Scott #511a - 1917
Prices are for CERTIFICATED copies

  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 - - -
Fall 2009 $12,500 - -
Spring 2010 - - $1,600
Fall 2010 - $3,250 $1,200-$1,300
Spring 2011 - - -
Fall 2011 - - -
2012 - - -
2013 - - -
2014 - - -
2015 - - -
2016 - - -
2017 - - -
2018 - - -



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

  NY Auction Houses
  MNH Graded MH MNH Graded
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 $7-$9 - $3-$4 $120 90J
- - - $450 98
Spring 2009 $5-$26 - - - -
$150 95 $3-$5 - -
Fall 2009 $6-$7 - $2-$4 $300 95
Spring 2010 $5-$24 - $3-$4 $300 98
Fall 2010 $7-$25 - $2-$6 - -
Spring 2011 $6-$9 - $3-$14 $275 98
Fall 2011 $4-$22 - $1-$9 - -
2012 $5-$29 - $2-$8 $325 98
2013 - - - - -
2014 - - - - -
2015 - - - - -
2016 - - - - -
2017 - - - - -
2018 - - - - -

Cancelled stamps are worth between $1 and $2


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

  NY Auction Houses
  MNH MH Used MNH Graded
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 $10 - - - -
Spring 2009 $27 - $1 $400 95J
Fall 2009 $21 $3 < $1 $325 98J
Spring 2010 $35 $2-$7 - - -
Fall 2010 $17-$140 $7 < $1 - -
Spring 2011 $3-$6 $3-$13 $1 - -
Fall 2011 $8-$13 $3-$13 $1-$10 - -
2012 $5-$12 $3-$12 $1-$2 $2,100 100J
2013 - - - - -
2014 - - - - -
2015 - - - - -
2016 - - - - -
2017 - - - - -
2018 - - - - -


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 2006 $16,000 $10,500
Fall 2006 - -
Spring 2007 - -
Fall 2007 - -
Spring 2008 - -
Fall 2008 - -
Spring 2009 - -
Fall 2009 - $23,000
Spring 2010 - -
Fall 2010 $24,000 -
Spring 2011 - -
Fall 2011 - -
2012 - -
2013 - -
2014 - -
2015 - -
2016 - -
2017 - -
2018 - -


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

  NY Auction Houses
  MNH Graded MH Graded MNH Graded
Fall 2005 $10-$25 - $3-$8 - - -
Spring 2006 $8-$13 - $2-$7 - $1,150 98
Fall 2006 $7-$20 - $1-$4 - $450 95J
Spring 2007 $8-$30 - $2-$5 - $240 95
Fall 2007 $5-$21 - $2-$3 - $260 95
- - - - $750 98J
Spring 2008 $7-$16 - $2-$4 - $220 95J
Fall 2008 $8-$11 - $2-$4 - $200 95
Spring 2009 $8-$28 - $1-$5 - $170 90
- - - - $110 95
Fall 2009 $3-$5 - $2-$3 - $90 95
- - - - $450 98J
Spring 2010 $6-$10 - $2-$5 - $375 95J
Fall 2010 $4-$17 - $1-$5 - - -
$10 85 $18 95 - -
Spring 2011 $6-$23 - $3-$11 - - -
Fall 2011 $3-$14 - $1-$3 - - -
2012 -$27 - - - $475 98J
$6-$145 95 $2-$7 - - -
2013 - - - - - -
2014 - - - - - -
2015 - - - - - -
2016 - - - - - -
2017 - - - - - -
2018 - - - - - -

Cancelled stamps are worth $1-$2


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

  NY Auction Houses
  MNH Graded MH Graded MNH Graded
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 $22-$55 - $11-$15 - $145 90
$150 90 - - $525 95
- - - - $1,500 98
Spring 2009 $29-$55 - $3-$17 - $925 98
Fall 2009 $22-$50 - $5-$19 - $180 90J
- - - - $325 95J
Spring 2010 $11 - $5 - - -
Fall 2010 $10-$18 - $15 - - -
Spring 2011 $20-$45 - $8-$21 - $650 98
- - $70 95 - -
Fall 2011 $19-$55 - $9-$11 - $300 95
- - - - $650 98
2012 $17-$65 - $8-$30 - $325 95
- - - - $475-$650 98
2013 - - - - - -
2014 - - - - - -
2015 - - - - - -
2016 - - - - - -
2017 - - - - - -
2018 - - - - - -

Cancelled stamps are worth $1



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

  NY Auction Houses
  MNH Graded MH MNH Graded
Fall 2005 - - $6-$27 $375 -
Spring 2006 $32 - $14-$67 $525 90J
Fall 2006 - - $17 $325-$900 95
Spring 2007 $40-$65 - $16-$27 $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 $30-$40 - $7-$27 $270 90
- - - $1,000 95
- - - $2,000 98J
Spring 2009 $65 - $8-$45 $140 90
$340 95 - - -
Fall 2009 $30 - $10-$22 $375 95
- - - $1,300 98
- - - $5,250 100
Spring 2010 $40 - $11-$29 $250 90J
Fall 2010 $35 - $9-$22 $500 95
$200 90 - $350 95J
$475 95 - - -
Spring 2011 - - $10-$30 - -
Fall 2011 $45 - $6-$23 $80 85
- - - $210 90J
- - - $550 95J
- - - $1,200 98J
2012 $65-$100 - $6-$35 $200 90
- - - $375 95
2013 - - - - -
2014 - - - - -
2015 - - - - -
2016 - - - - -
2017 - - - - -
2018 - - - - -

Cancelled stamps are worth $1


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 - $4,250 -
Spring 2010 - - -
Fall 2010 - - -
Spring 2011 - - -
Fall 2011 - - -
2012 - - -
2013 - - -
2014 - - -
2015 - - -
2016 - - -
2017 - - -
2018 - - -


20c - Light ultramarine
Flat Plate - Double Impression
Unwatermarked - Scott #515c - 1917


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 - - $13,000
Spring 2010 - - -
Fall 2010 - - -
Spring 2011 - - -
Fall 2011 - - $9,000
2012 - - -
2013 - - $4,000*
2014 - - -
2015 - - -
2016 - - -
2017 - - -
2018 - - -

* creased