My full title was at first, "Value of Knowledge: A United States First -- Looking Beyond The Obvious in Clipper Airmail (Postage Due) Covers." But while I did place this in the BOB section as my examples air airmail and postage due, both back of the book areas, I do not want to limit the contributions to this thread. If there are more additions as requested not limited to BOB covers, I will ask the moderator to move the thread into a more appropriate category at that time.
Here are two recent covers sold on ebay to the same buyer, a friend. From a postal rate point of view, they are similar, both one rate underpaid Clipper Airmail covers with a C20 Transpacific Airmail stamp from 1935. Both flying west from Hawaii to the mainland. One (
ebay item number:
276719757941) opened at a dollar and sold for $9.38 + $1.60 S&H, and the other (
ebay item number:
196792959274) opened at $29.95 selling with only one bid plus $8.50 S&H (from Canada).
The less expensive cover was in great shape, the more expensive cover had a corner issue. From an exhibiting point of view the cheaper one was the smaller cover close to a #8 and the pricier one larger a #10, normally covers which require less real estate on a page sell for more, all other things being equal.
This is the less expensive item:


The title description was, "GOLDPATH: US AIRMAIL 1937 HONOLULU,HI.DUE25,25C,SLOGAN CV629_P05" with no additional details in the listing text. It received four bids from four bidders.
This is the higher priced cover.


The title description was, "HONOLULU Hawaii 1935 Cover to USS Indianapolis. Philippine Clipper. Postage Due" with the added text description information, "as pictured; small loss area at upper left corner." It received one bid from one bidder.
For this cover, the destination of the USS Indianapolis, a heavy cruiser, adds some value to the cover due to the later historic notoriety of the USS Indianapolis from which story and movies were based. It the USS Indianapolis delivered the inner components of both atom bombs used in Japan to end WWII to the US Airbase on Tinian in the Mariana Islands. On its return, traveled to Guam and then on the Leyte Gulf it was sunk by submarine on July 30, 1945 with many survivors, about 900 safe in the water out of the crew that day of 1195. Alas, only 316 were eventually rescued days later with all other dying adrift as the US Navy was unaware of the sinking until three and a half days later. This alone justifies the higher price for this cover even with the slight corner flaw.
HOWEVER...There is more about this cover which should drive the price much higher:
While the ship from 1935 continued its voyage into history, the more interesting aspect of this cover is its recipient, Hawaiian native Ensign Gordon P. (Pai'ea) Chung-Hoon

who was granted the rank of Ensign in May 1934 after graduating from the US Naval Academy as the first Asian Naval Academy graduate and assigned to the USS Indianapolis. Even before graduation in 1933 he made quite a national name for himself as a halfback and punter for the Naval Academy football team. He was later recognized as one of the 1933 season football heroes by Sports Illustrated.
While a family member, not his father, sent the letter to the USS Indianapolis where he did receive it, he did not stay on the Indianapolis. Rising in rank he was assigned to different ships, including the USS Arizona at a Lieutenant. While so assigned, he survived the Sunday 12-7-1941 attack on Pearl Harbor. He was on shore that morning, due to a weekend pass, trying his best to return to his ship but was prevented from doing so by the bombing. Of the assigned crew of the USS Arizona 1177 died and 335 survived including Chung-Hoon.
It is my opinion that he felt some level of survivor's guilt for not being on his ship. This may have driven his later actions.
As time passed he continued to rise in rank to Commander Chung-Hoon at which time one of his assignments was the command of the USS Sigsbee. The Sigsbee was hit and severely damaged by a kamikaze plane. With one engine lost, the second damaged such that it's full speed was a pitiful now 5 knots, no steering control and taking on water, Commander Chung-Hoon struggled to control his ship, while directing punishing antiaircraft fire and damage control units which saved the ship. After that April 14, 1945 battle, the ship was so damaged that Admiral William Halsey, Jr. directed the ship to be scuttled. Declining to do so saying, "No, I have kids on here that can't swim and I'm not putting them in the water. I'll take her back."
And Commander Chung-Hoon did so while burying the ship's 23 dead at sea during the return. A crewman observed, "I often remember that the only man tough enough not to duck, was also the only man tender enough to cry."
Gordon P. Chung-Hoon was awarded the Navy Cross and Silver Star for his action while in command of the USS Sigsbee. The Navy Cross is the award only second to the Medal of Honor. I am forced to wonder if the Commander only received the Navy Cross due to his Asian heritage similar to the lower level medals given the Japanese Americans for their actions. That slight was eventually corrected in 2000 by reviewing and upgrading the awards previously provided including many up to a Medal of Honor. Perhaps if Gordon Chung-Hoon was still alive (died 1979) fellow Hawaiian, Senator Daniel Inouye (Captain, US Army, 442nd Regimental Combat Team) whose Distinguished Service Cross was upgrade to a Medal of Honor in 2000, the Senator would have reviewed Chung-Hoon's Navy Cross award.
Chung-Hoon continued to rise in rank to earn yet another first, the first Asian America Flag Officer having reached the rank of rear admiral (lower half) - one star- on his rise to his final of Rear Admiral a two star rank.

His name honors an Arleigh Burke-class destroyer, USS Chung-Hoon.
Here the buyer looked beyond the simple or limited description to find a real philatelic and historical gem. While a picture may be worth a thousand words looking beyond the picture may find many more words, important to the story words.
I, AND LIKELY OTHER SCF MEMBERS, WOULD WELCOME OTHER COVERS OR PHILATELIC MATERIAL WHO STORY AND VALUE IS NOT OBVIOUS AT FIRST GLANCE. Edit: Spelling