The Russian AB Negative Blood Patch carries the designation “AB(IV) Rh−.” The blood-group characters appear in the left compartment, and the Rh notation appears in the right compartment. The photographed example has yellow lettering on a dark olive field, with a red rectangular frame and a vertical dividing line.

The letter designation and the parenthesized numeral are two ways of presenting the same ABO group in the Russian numbering convention. Here, AB corresponds to group IV. The numeral belongs with the group characters to its left; it is not a unit number or a service designation. This combined letter-and-numeral presentation is an identifying feature when reading Russian-language uniform accessories.

The separate Rh mark is followed by a minus sign, identifying the negative designation. ABO group and Rh designation occupy different parts of the inscription. The AB Rh negative insignia consequently presents both pieces of information within a single horizontal label. The punctuation and the sign are retained in the transcription because changing either would change the wording of the displayed identification.

The two group letters AB are followed by IV in parentheses. A red frame and matching vertical divider enclose the yellow wording. The dark olive field remains visible behind both compartments, with an additional olive perimeter outside the red border.

This red border blood-group tab belongs to the identification-label category rather than the slogan or animal-emblem category. Its face consists of abbreviated notation without a personal surname or an organizational title. The compact two-panel arrangement keeps the group on one side and the Rh field on the other, allowing the full inscription to be read from left to right.

For an English-language collection, the AB IV identification strip can be indexed under the spelled-out group and Rh designation while retaining the original notation in the description. The product title uses the English words AB negative, while the photographed label keeps its letter, Roman numeral and mathematical sign. The visible border color and field distinguish this particular example from otherwise similar labels carrying the same group. The listing concerns the collectible uniform accessory and its printed designation. The group and Rh fields are both visible in the supplied front view.

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