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POLL for USPS experts: do coin grading charts qualify for Media Mail?

I recently shipped some Coin Values coin grading posters via USPS Media Mail using Click-N-Ship with carrier pickup. (In hindsight, I should have carried them into the Post Office). A day later, I received a letter from my local PO revealing that the fine folks there had opened my mailing tube, deemed that the contents did not qualify for Media Mail, sealed up the tube, and sent the posters on their way via Parcel Post -- with postage due from the recipient. Ugh!
The posters look something like this:

A glance at the USPS Domestic Mail Manual, section 173 3.2g reveals that items qualified to ship via Media Mail includes "Printed educational reference charts designed to instruct or train individuals for improving or developing their capabilities. [italics mine] Each chart must be a single printed sheet of information designed for educational reference. The information on the chart, which may be printed on one or both sides of the sheet, must be conveyed primarily by graphs, diagrams, tables, or other nonnarrative matter. An educational reference chart is normally but not necessarily devoted to one subject. A chart on which the information is conveyed primarily by textual matter in a narrative form does not qualify as a printed educational reference chart for mailing at the Media Mail prices even if it includes graphs, diagrams, or tables. Examples of qualifying charts include maps produced primarily for educational reference, tables of mathematical or scientific equations, noun declensions or verb conjugations used in the study of languages, periodic table of elements, botanical or zoological tables, and other tables used in the study of science. "
So, my question for this august group is, do these posters qualify for Media Mail shipping?
The posters look something like this:

A glance at the USPS Domestic Mail Manual, section 173 3.2g reveals that items qualified to ship via Media Mail includes "Printed educational reference charts designed to instruct or train individuals for improving or developing their capabilities. [italics mine] Each chart must be a single printed sheet of information designed for educational reference. The information on the chart, which may be printed on one or both sides of the sheet, must be conveyed primarily by graphs, diagrams, tables, or other nonnarrative matter. An educational reference chart is normally but not necessarily devoted to one subject. A chart on which the information is conveyed primarily by textual matter in a narrative form does not qualify as a printed educational reference chart for mailing at the Media Mail prices even if it includes graphs, diagrams, or tables. Examples of qualifying charts include maps produced primarily for educational reference, tables of mathematical or scientific equations, noun declensions or verb conjugations used in the study of languages, periodic table of elements, botanical or zoological tables, and other tables used in the study of science. "
So, my question for this august group is, do these posters qualify for Media Mail shipping?
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Comments
Leave's a lot open to imterpertation here? Is textual matter all them images?