Source: Sacratissimi Principis Institutionum, published in 1678
This is an example of a wire watermark. Although it is cutoff, the image of a crown, common in so many watermarks from the 1600s, is apparent.
Additional Book Information
D. Justiniani Sacratissimi Principis Institutionum Libri Quatuor. Additisuntuuli Digestor De Verborum Significatione Et Regulis Juris. Ingd. Batav. 1678
