When a piece of type gets damaged, it's like a fingerprint that can be used to tie all the work of a printer together, whether or not their name appears on the title page. The Catalog of Distinctive Type is building a database of these fingerprints for Restoration England. https://cdt.library.cmu.edu/
@overholt ooh, this is very relevant to a conversation at work yesterday!
@overholt if this hasn't been used in an episode of csi it's just a matter of time
@grumpasaurus @overholt *glances nervously at my laser printer*
@theorangetheme @overholt I every single laser printer's firmware has a unique fingerprint that I've been able to script and search for this exact a
@grumpasaurus @overholt The microdots? I just checked mine for them, and I couldn't find any, but I can only scan at 600 DPI and I don't know if that's enough. šŸ˜…

@overholt

My husband collects coins (quite seriously) and he is involved in a similar (but distributed, community-based) effort to catalog all the dies used to make Morgan silver dollars at various mints in various years. He received an award for, if I'm remembering correctly, his work on the 1883 Philadelphia dies.

@stevegis_ssg @overholt That's so cool! :3

@theorangetheme @overholt

If you're looking for a rabbit hole …

https://www.vamworld.com/wiki/Home

@stevegis_ssg @overholt A detailed MediaWiki instance about a niche topic I've never heard of? Oh HELL yeah! This is fantastic, thank you.
@overholt I bet you can use damage over time to help date stuff too. I'm sure this is a very interesting thing to study.
@overholt @briankrebs I’m expecting this to unearth some scandals, such as upstanding Bible printers who did sidelines printing pornography and/or seditious pamphlets or similar

@overholt

Shades of typewriter registries with samples of output, supposedly used for tracking documents in USSR and the like