September 1922, October 1922, November 1922, and December 1922. Make an offer.
Does the "Africa" supplement accompany the October issue and the "World" supplement accompany the December issue?
Are any pages missing from any issue (to include ads)?
What is the condition of each issue, i.e. Fair, Good, Very Good, etc.?
These are the basic questions a collector needs answered prior to making an offer.
Thanks for your National Geographic Magazine Grading Standard Word File Melvin!
You are welcome.
Please understand there exists no accepted standard grading system for NGM's. This is my grading standard and is considered by some dealers to be excessive, particularly the VG standard.
Be very specific with your questions and responses in dealing with others about "condition" and be tolerant of their views. As long as they understand exactly what you're looking for or selling there should be no difficulties with the transaction regardless of whose definition of condition is used.