1678 Vienna Diplomatic Letter Signed – Italian Manuscript from the Habsburg

An original seventeenth-century Italian diplomatic letter written at Vienna and dated 24 September 1678, during the reign of Holy Roman Emperor Leopold I.

Addressed to an Illustrious Marquis associated with Monferrato [Montferrat], the letter concerns ongoing diplomatic communications and negotiations. The writer acknowledges receipt of earlier correspondence, assures the recipient that negotiations are progressing with diligence and fidelity, and promises further reports at the earliest opportunity.

Written in an elegant Italian chancery hand, the manuscript remains folded in its original letter format with the address panel intact and retains its original black wax seal, an increasingly uncommon survival on seventeenth-century diplomatic correspondence.

The document dates from the closing stages of the Franco-Dutch War, when Vienna served as the diplomatic center of the Habsburg Monarchy and maintained extensive correspondence with the Italian states.

Date: 24 September 1678
Place: Vienna
Language: Italian
Format: Autograph manuscript letter with integral address leaf
Seal: Original black wax seal intact
Condition: Excellent, with original folds, clean paper, strong ink, and attractive presentation.

An exceptional display piece from the golden age of European diplomacy, appealing to collectors of Habsburg history, Italian states, seventeenth-century manuscripts, and early diplomatic correspondence.