The GDELT Project

Gemini For Museums: Paleographics Gemini-Style & Transcribing Handwritten Notes In A 500-Year-Old Book

Antiquitarian books often contain numerous handwritten annotations in various scripts, inks, handwritings and eras. A 500-year-old book like this stunning 1539 Holbein Icones can contain centuries of marginalia and notes on its pages. In this particular copy we find two interesting annotations, one written in pencil in a modern hand and one written in ink that is far older. While not quite imperfect, Gemini does an admirable job of deciphering the first passage in its entirety and offering key hints and insights to help a human researcher narrow the possible interpretations of the second, including detailed paleographic analyses. Here we use a mix of Gemini 3.1 Pro and Gemini 3.5 Flash Code Execution models. As general purpose AI models continue to move and more specialized antiquitarian models are developed that are purpose-trained on historical writing, the ability of these models to transcribe even the most illegible handwriting will continue to improve in leaps and bounds. Already, the ability to snap a photo of a handwritten note from a 500-year-old book and instantly get back a possible transcription represents a tremendous advance in museum and archival cataloging and scholarly research.

Transcribe this handwriting found in a 1539 Holbein Icones. Tell me its meaning and significance.

Gemini transcribes as:

Maggs Bros Ltd Purchased 10,543.13
Date Purchased 10.87

And goes on to provide context to who Maggs Bros is and add some helpful additional narrowing of the date of the inscription:

Maggs Bros Ltd is one of the oldest, most famous, and highly respected antiquarian booksellers in the world. Founded in London in 1853, they have historically held Royal Warrants and handled some of the most important books and manuscripts in existence. The firm was founded as "U. Maggs" in 1853, became "Maggs Bros" in 1894, and officially incorporated as a Limited company ("Ltd") in 1935. Because this notation explicitly includes "Ltd," we know this specific pencil mark was made after 1935.

Given the difficulty of reading the second line, Gemini was asked to verify its findings:

The first letter is clearly a capital "D", followed by what looks like "ate". The second word starts with a distinct "p" with a descending tail, followed by the loops of an "h" and ending in a "d", making "purchased" the exact fit.

Gemini struggles with a this more contemporary inscription:

Transcribe this handwriting found in a 1539 book. Look VERY CAREFULLY. Enhance the image if you need. The ink has faded in places.

It actually writes Python code to apply image filtering to enhance the text:

import cv2
import matplotlib.pyplot as plt
import numpy as np

# Load image
img = cv2.imread('input_file_0.png')
# Since it's grayscale/brownish, let's look at its channels and enhance contrast.
gray = cv2.cvtColor(img, cv2.COLOR_BGR2GRAY)

# Apply some basic CLAHE or simple normalization to make the ink pop
clahe = cv2.createCLAHE(clipLimit=3.0, tileGridSize=(8,8))
cl1 = clahe.apply(gray)

# Save the enhanced image to inspect if needed, or we can just analyze it.
cv2.imwrite('enhanced.png', cl1)
print("Image dimensions:", img.shape)

It looks past the fading ink and transcribes the date as 1619, producing this analysis:

Visual and Structural Analysis

1. The Identical Shape of the First and Third Digits (1)

2. The Shape of the Second Digit (6)

3. The Last Digit (9)

The actual text is too illegible to fully make out, but Gemini offers one plausible reading:

Detailed Word-by-Word Analysis

Word 1: Hanß (Hans)

Word 2: tiefrot / tieffrot (Tiefrot / Tiefrod)

Word 3: Ehre / ehrt (Honor / Honors)

Final Reevaluated Transcription

Taking all character-by-character evidence and the historical context into account, the inscription reads:

Hanß  tiefrot  Ehre  1619