diplomatics

There are dictionaries of antiquities, of chronology, of dates, of genealogy, of heraldry, of diplomatics, of abbreviations, of useful receipts, of monograms, of adulterations and of very many other subjects.

From Encyclopaedia Britannica, 11th Edition, Volume 8, Slice 4 "Diameter" to "Dinarchus" by Various

Diplō′matist, Dip′lōmat, one skilled in diplomacy; Diplomatol′ogy, the study or science of diplomatics, charters, decrees, &c.—Diplomatic corps, or Corps diplomatique, the whole body of foreign diplomatists resident at any court.

From Chambers's Twentieth Century Dictionary (part 1 of 4: A-D) by Various

The flowers and insects will give me that relaxation, with God's will, after my long researches in philology and diplomatics.

From The Crime of Sylvestre Bonnard by Anatole France

The reading and judging of manuscripts are now known as the science of diplomatics.

From Forty Centuries of Ink or, a chronological narrative concerning ink and its backgrounds, introducing incidental observations and deductions, parallels of time and color phenomena, bibliography, chemistry, poetical effusions, citations, anecdotes and curiosa together with some evidence respecting the evanescent character of most inks of to-day and an epitome of chemico-legal ink. by David Nunes Carvalho

We may mention, in passing, that the papyrus roll gave us a word still in use in diplomatics, the word protocol.

From Illuminated Manuscripts by John William Bradley