General Purpose GP#FDOI-10
by Oswald A. Ludwig

U.S. First Day Cover Cachet Display Catalog:
Cachetmaker: Oswald A. Ludwig: General Purpose GP#FDOI-10

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

(last updated .03-06-2026)

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This page displays First Day Covers (FDC) with General Purpose (GP) cachets, all with the text, "...First Day of Issue", created by Oswald A. Ludwig (1896-1961), of Dearborn, MI. Except as noted by "{A}" (my personal collection), all other displayed covers were found on the Web.

Wanted: a 300 bpi / 600 pixel wide (or greater) .jpg scan of any unlisted cachet (ALSO any cachet marked ***)
Email it to: henkle@pobox.com
Subject for this page: Doug Henkle unlisted Oswald A. Ludwig: General Purpose GP#FDOI-10 cachet
(an email with any other subject or with any other graphical format will be ignored IF it has an attachment)
mm-dd-yyyy - First Day of Issue

U.S. Scott #nnn = U.S. Scott Catalog number.
mm-dd-yyyy - First Day of Issue

General Purpose (GP) cachet pages:
Eagles -- 1DC and 1DI -- FDC -- FDI -- FDOI
Identifier of all the GP's above on one page
General Purpose "Border" Cachets
Note that each General Purpose Cachet has been assigned its own unique "GP#" Catalog Number.
Ioor General Purpose (GP) "Border" Cachets
Ioor General Purpose (GP) Cachets

U.S. Scott #803-834-GP27 and #839-851 -- many dates -- Oswald A. Ludwig: General Purpose GP#FDOI-10 -- XIV:70
General Purpose cachet: GP#FDOI-10
U.S. Scott #804b-GP27 -- 1-27-1939 -- Oswald A. Ludwig: General Purpose GP#FDOI-10 -- XIV:70 --- (eBay)
U.S. Scott #806b-GP27 -- 1-27-1939 -- Oswald A. Ludwig: General Purpose GP#FDOI-10 -- XIV:70 --- (eBay)
U.S. Scott #807a-GP27 -- 1-27-1939 -- Oswald A. Ludwig: General Purpose GP#FDOI-10 -- XIV:70 --- (eBay)
U.S. Scott #835-GP4 -- 6-21-1938 -- Oswald A. Ludwig: General Purpose GP#FDOI-10 -- XIV:95 --- (eBay)
U.S. Scott #836-GP24 -- 6-27-1938 -- Oswald A. Ludwig: General Purpose GP#FDOI-10 -- XV:40
U.S. Scott #837-GP14 -- 7-15-1938 -- Oswald A. Ludwig: General Purpose GP#FDOI-10 -- XV:62 --- (eBay)
U.S. Scott #837-GP14a -- 7-15-1938 -- Oswald A. Ludwig: General Purpose GP#FDOI-10 -- XIV:70 --- (eBay)
This cachet is printed on a Carl M. Becken general purpose Air Mail envelope, GP#Border2.
U.S. Scott #838-GP8 -- 8-24-1938 -- Oswald A. Ludwig: General Purpose GP#FDOI-10 -- XV:88 --- (eBay) / (eBay) / (eBay ***)
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U.S. Scott #839-GP27 -- 1-20-1939 -- Oswald A. Ludwig: General Purpose GP#FDOI-10 -- XIV:70 --- (eBay)
U.S. Scott #842-GP27 -- 1-20-1939 -- Oswald A. Ludwig: General Purpose GP#FDOI-10 -- XIV:70 --- (eBay)
U.S. Scott #844-GP27 -- 1-20-1939 -- Oswald A. Ludwig: General Purpose GP#FDOI-10 -- XIV:70 --- (eBay)
U.S. Scott #845-GP27 -- 1-20-1939 -- Oswald A. Ludwig: General Purpose GP#FDOI-10 -- XIV:70 --- (eBay)
U.S. Scott #847-GP27 -- 1-20-1939 -- Oswald A. Ludwig: General Purpose GP#FDOI-10 -- XIV:70 --- (eBay)
U.S. Scott #848-GP27 -- 1-20-1939 -- Oswald A. Ludwig: General Purpose GP#FDOI-10 -- XIV:70 --- (eBay)
U.S. Scott #852-GP4-NIP -- 2-18-1939 -- Oswald A. Ludwig: General Purpose GP#FDOI-10 --- (eBay)