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As said, I am just interested in this apparently interesting topic and want to learn.
Join the EFO Collector's Club https: //www.efocc.org/
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PS: Ok, I started reading a bit in this topic and need more time to ask better questions about Canadian dry vs. wet vs. flat vs. rotary :).
Make a new subject thread.
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- 1901 5c Pan-American
- 1978 2$ Kerosin Table Lamp
The 1901 inverts are well known and would have resulted in the manner of the other 1901 inverts.
Same with the $2 lamp, trust me, the $2 and $5 were checked when the $1 as reported.
In both cases the question first asked is where did you get them. Front door, back door or side door? Back door is stolen stock and misdirected from destruction printer's waste. Front door is normal over the counter sale and the side door is officially approved disbursement usually via a trade and can include worker's record copies of proofs/essays.
You want honest to god printer's waste which was marked for culling and no up to the quality of what should be issued? Just look at what was released during WWII.
However you are asking about printer's waste generally but giving example from likely the best recorded production and distribution system which is nothing like many, many other country's stamp production.
As to recognized US EFOs there are at least 82 different groups.
Is this what you are pushing to hear? The difference is clear at times and for others it is a learned judgement call?
For you, you say there is no interest in money, only knowledge. For you then just flip a coin, heads printer's waste, tails, not printers waste. Then keep any you find which is given to you for free, sine money is irrelevant. See anything produced not up to issue quality is waste, printer's waste, the question really is was it noticed or unnoticed, or noticed but overlooked during culling.
You referred to a Seigel listing for the piece of plate proof of the first BEP series. Seigel was misleading in their comments. Scoot Catalog company would not declare it as good or as printer's waste. What Scoot would do is review the expertizing opinions and see if then the material fits the editorial standards for inclusion.
You are mixing terms of art and common every day terms. I have directed you to the EFOCC twice in this tread and referenced a periodically updated book on US Errors. There is where you will find basic information you are just not recognizing as basic. And to that, I say as gently as possible, wearing my teaching hat which shows over 5 decades of wear:
See: Dunning–Kruger effect
The 5 Stages of Learning are:
1. Unconscious Incompetence
2. Conscious incompetence
3. Conscious competence
4. Unconscious competence
5. Reflective Competence