U.S. Scott #CE1-16 - Dr. Harry C. Ioor #OR-B1 border Dr. Harry C. Ioor
GP Borders

U.S. First Day Cover Cachet Display Catalog:
Cachetmaker: Dr. Harry C. Ioor General Purpose Bordered Envelopes

Part of the U.S. First Day Cover Cachet Display Catalog
by Douglas H. Henkle, AFDCS LM #137, henkle@pobox.com

(last updated .12-03-2025)

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      This page displays First Day Covers (FDC) with General Purpose (GP) Air Mail Bordered envelopes produced by Dr. Harry C. Ioor (1882-1940) of Indianapolis, IN. All 17 Ioor borders known to me are displayed here in color. The "Photo Cachet Catalog: Harry Ioor" by Dr. M. Douglas Parks (1932-2018) is in black and white.
      Dr. M. Douglas Parks: Ioor Photo Cachet Catalog (border pages) (PDF)

      Wanted: a 300 bpi / 600 pixel wide (or greater) .jpg scan of any unlisted border, and ALSO any cachet marked ***
Email it to: henkle@pobox.com
Subject for this page: Doug Henkle unlisted Ioor Borders
      (an email with any other subject or with any other graphical format will be ignored IF it has an attachment)

      U.S. Scott #nnn = U.S. Scott Catalog number
      mm-dd-yyyy = First Day of Issue
      NI-DP = (not in Douglas Parks) Not listed in Photo Cachet Catalog: Harry Ioor (1976) by Dr. M. Douglas Parks (1932-2018)

      General Purpose (GP) cachet pages:
Eagles -- 1DC and 1DI -- FDC -- FDI -- FDOI
Identifier of all the GP's above on one page
General Purpose (GP) "Border" Cachets
Ioor General Purpose (GP) "Border" Cachets (this page)
Ioor General Purpose (GP) cachets

      Wanted: #OR-B8 Cover Scan (prefer FDC scan):

Thumbnails Menu:
      Ioor bordered envelopes: only the printing on the front side top edge of the cover is displayed.

      Air Mail bordered General Purpose cachet #OR-B1 - Harry C. Ioor #OR-B1) Dr. Harry C. Ioor -- covers
      Air Mail bordered General Purpose cachet #OR-B4a2 - unknown similar #Ludwig1 red (Detroit-Ludwig/Oswald A. Ludwig) -- #C26-NIM7 FDC
      Air Mail bordered General Purpose cachet #OR-B4a2 - unknown similar #Ludwig2 dark red (Detroit-Ludwig/Oswald A. Ludwig) -- #858-39 FDC
Air Mail bordered General Purpose cachet #OR-B2 - Harry C. Ioor #OR-B2) Dr. Harry C. Ioor -- covers
Air Mail bordered General Purpose cachet #OR-B3 - Harry C. Ioor #OR-B3) Dr. Harry C. Ioor -- covers
Air Mail bordered General Purpose cachet #OR-B4 - Harry C. Ioor #OR-B4) Dr. Harry C. Ioor -- covers
Air Mail bordered General Purpose cachet #OR-B5 - Harry C. Ioor #OR-B5) Dr. Harry C. Ioor -- covers
Air Mail bordered General Purpose cachet #OR-B5a - Harry C. Ioor #OR-B5a) Dr. Harry C. Ioor -- covers
Air Mail bordered General Purpose cachet #OR-B6 - Harry C. Ioor #OR-B6) Dr. Harry C. Ioor -- covers
Air Mail bordered General Purpose cachet #OR-B7 - Harry C. Ioor #OR-B7) Dr. Harry C. Ioor (with 2 blue stars) -- #C20-27 FDC
Air Mail bordered General Purpose cachet #OR-B8 - Harry C. Ioor #OR-B8) Dr. Harry C. Ioor (with 1 green star)
Air Mail bordered General Purpose cachet #OR-B9 - Harry C. Ioor #OR-B9) Dr. Harry C. Ioor -- #CE1-13 FDC
Air Mail bordered General Purpose cachet #OR-B10 - Harry C. Ioor #OR-B10) Dr. Harry C. Ioor -- 1939 Event cover
Air Mail bordered General Purpose cachet #OR-B11 - Harry C. Ioor #OR-B11) Dr. Harry C. Ioor -- barber pole border
Air Mail bordered General Purpose cachet #OR-B12 - Harry C. Ioor #OR-B12) Dr. Harry C. Ioor (4 stars UL) -- #CE1-GP1 FDC
Air Mail bordered General Purpose cachet #OR-B13 - Harry C. Ioor #OR-B13) Dr. Harry C. Ioor (2 stars UL) -- #CE1-14 FDC
Air Mail bordered General Purpose cachet #OR-B14 - Harry C. Ioor #OR-B14) Dr. Harry C. Ioor -- #CE1-14 FDC
Air Mail bordered General Purpose cachet #OR-B15 - Harry C. Ioor #OR-B15) Dr. Harry C. Ioor -- 1932 Event cover
Air Mail bordered General Purpose cachet #OR-B16 - Harry C. Ioor #OR-B16) Dr. Harry C. Ioor -- 1943 Event cover
Other Ioor borders not in the Catalog
Air Mail bordered General Purpose cachet #OR-B17 - Harry C. Ioor #OR-B17) Dr. Harry C. Ioor -- covers
  1. #OR-B1 -- Air Mail bordered General Purpose -- Ioor #OR-B1 -- Dr. Harry C. Ioor
          #718-719-5, 6-15-1932 -- #719-2, 6-15-1932 -- #C17-5a-NIP, 9-26-1932
    Air Mail bordered General Purpose cachet #OR-B1
    U.S. Scott #718-5 - Air Mail bordered General Purpose cachet #OR-B1 U.S. Scott #719-5 - Air Mail bordered General Purpose cachet #OR-B1 U.S. Scott #719-2 - Air Mail bordered General Purpose cachet #OR-B1 U.S. Scott #C17-5a - Air Mail bordered General Purpose cachet #OR-B1
  2. #OR-B2 -- Air Mail bordered General Purpose -- Ioor #OR-B2 -- Dr. Harry C. Ioor
          #785-#789, 1-01-1932 -- Events, 8-06-1932, 6-23-1933
    Air Mail bordered General Purpose cachet #OR-B2
    U.S. Scott #704-705-32 - Air Mail bordered General Purpose cachet #OR-B2 Air Mail bordered General Purpose cachet #OR-B2 on 8-06-1932 event cover Air Mail bordered General Purpose cachet #OR-B2 on 6-23-1933 event cover
  3. #OR-B3 -- Air Mail bordered General Purpose -- Ioor #OR-B3 -- Dr. Harry C. Ioor
          #785-#789, 5-26-1937 -- #788, 3-23-1937
    Air Mail bordered General Purpose cachet #OR-B3
    U.S. Scott #785-789 - Air Mail bordered General Purpose cachet #OR-B3 U.S. Scott #788-3 - Air Mail bordered General Purpose cachet #OR-B3
  4. #OR-B4 -- Air Mail bordered General Purpose -- Ioor #OR-B4 -- Dr. Harry C. Ioor
          #702-7b, 5-21-1931 -- #703-6a, 10-19-1931 -- #C18-5a, #C18-5c, 10-02-1933 -- Events, 10-02-1933, 7-10-1940, 7-18-1940
    Air Mail bordered General Purpose cachet #OR-B4
    U.S. Scott #702-7b - Air Mail bordered General Purpose cachet #OR-B4 U.S. Scott #703-6a - Air Mail bordered General Purpose cachet #OR-B4 U.S. Scott #C18-5a - Air Mail bordered General Purpose cachet #OR-B4 U.S. Scott #C18-5c - Air Mail bordered General Purpose cachet #OR-B4 Air Mail bordered General Purpose cachet #OR-B4 on 10-02-1933 event cover Air Mail bordered General Purpose cachet #OR-B4 on 7-10-1940 event cover Air Mail bordered General Purpose cachet #OR-B4 on 7-18-1940 event cover
  5. #OR-B5 -- Air Mail Bordered General Purpose -- #OR-B5 -- Dr. Harry C. Ioor
          #784-39, 8-26-1936 -- #796, 8-18-1937 -- #797, 8-26-1937
    Ioor Air Mail Bordered General Purpose cachet #OR-B5
    U.S. Scott #784-39 - Ioor Air Mail Bordered General Purpose cachet #OR-B5 U.S. Scott #796 - Ioor Air Mail Bordered General Purpose cachet #OR-B5 U.S. Scott #797 - Ioor Air Mail Bordered General Purpose cachet #OR-B5
  6. #OR-B5a -- Air Mail Bordered General Purpose -- #OR-B5a -- Dr. Harry C. Ioor
          #802-GP22, 12-15-1937 {A} -- #C25, 6-25-1941
    Ioor Air Mail Bordered General Purpose cachet #OR-B5a
    U.S. Scott #802-GP22 - Ioor Air Mail Bordered General Purpose cachet #OR-B5a U.S. Scott #C25 - Ioor Air Mail Bordered General Purpose cachet #OR-B5a
  7. #OR-B6 -- Air Mail Bordered General Purpose -- #OR-B6 -- Dr. Harry C. Ioor
          #806b, 1-27-1939
    Ioor Air Mail Bordered General Purpose cachet #OR-B6
    U.S. Scott #806b - Ioor Air Mail Bordered General Purpose cachet #OR-B6
    8. TBA --- #OR-B7 - #OR-B10
  8. #OR-B11 -- Air Mail bordered General Purpose -- Ioor #OR-B11 -- Dr. Harry C. Ioor
          Standard barber pole. I will not be referring to "OR-B11" anywhere else on this site because I do not know how to differentiate between an Ioor barber pole border and one made by any one of many other barber pole border printers.
    General Purpose cachet OR-GP11
  9. #OR-B12 -- Air Mail bordered General Purpose -- Ioor #OR-B12 -- Dr. Harry C. Ioor
          #CE1-14, 8-30-1934 VII:102 -- #CE2-2, 2-10-1936 VIII:102
    Air Mail bordered General Purpose cachet #OR-B12
    U.S. Scott #CE1-14 - Air Mail bordered General Purpose border #OR-B12 U.S. Scott #CE2-2 - Air Mail bordered General Purpose border #OR-B12
  10. #OR-B13 -- Air Mail bordered General Purpose -- Ioor #OR-B13 -- Dr. Harry C. Ioor
          #CE2-2, 2-10-1936 VIII:102
    Air Mail bordered General Purpose cachet #OR-B13
    U.S. Scott #CE1-14 - Air Mail bordered General Purpose cachet #OR-B13
    11. TBA --- #OR-B14 - #OR-B16
    Other Ioor borders not in the Catalog
  11. #OR-B17 (NI-DP) -- Air Mail bordered General Purpose -- Ioor #OR-B17 (NI-DP) -- Dr. Harry C. Ioor
          FDC, unknown
          Event, 5-11-1936
    Air Mail bordered General Purpose cachet #OR-B17
    Air Mail bordered General Purpose cachet #OR-B17 on 5-11-1936 event cover
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Page created by Douglas H. Henkle (Contact): henkle@pobox.com