As many collector get older (the author is 79 years old) many, if not most, philatelic collectors realize that they probably are not going to able to find and/or afford the stamps or philatelic related subjects, such as covers, that they have been looking for during their collecting years. Many simply decide to sell their collections and stop collecting. There are various reasons, such as frustrations with not finding those elusive items, needing the money for retirement, ill health or just simply not being able to store their collections.
As the author has also reached the point of being frustrated in not finding certain Korean philatelic items, it is always helpful to remind readers that you never know what will turn up in their hunts, and maybe one should not give up so soon looking for those elusive items.
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Scott 212E is on my want–list too. I am always on the hunt for laid-paper varieties of this era even if it means buying a collection and acquiring a bunch of duplicates.
Thanks for your comment Darrin. It took me a long time to find 212E, with the horizontal laid paper. I am very happy to hear that another Korean philatelist is interested in those laid issues. I believe I have all of them now, with the exception of a couple on the presentation sheets that were issued in both horizontal and vertical laid paper, which are extremely hard to find. Bob