Silent Films

Here is a list of all the silent film lost media I could find and think of, if any misses, you should look for them in the wiki. However I think that if you have them (not talking tapes or negatives), they might not be lost but hey let's try :

In regard to comedy :
A Woman of the Sea, by Charlie Chaplin 1926
Her friend the bandit, by Charlie Chaplin, 1914
The Professor, by Charlie Chaplin, 1919
Hollywood, a lost comedy of 1923 which had cameos of numerous actors, including Arbuckle I think
The Gold Diggers, 1923, partially lost
Gentlemen prefer blondes, 1928
The Cat's Pajamas, 1926
L'Invalide à la tête de bois (or in english, The Wooden-Headed Veteran), 1908
Humor Risk, a lost Marx Brothers film, 1921

In other categories of silent films:
Rough House Rosie, 1927, partially found
Anne of Green Gables, 1919
The Patriot, 1928, partially found
The Werewolf, 1913
"The Kaiser, the Beast of Berlin", 1918
Pegeen, 1920
Life Without Soul, 1915
The Actress, 1928
Arirang, 1926 (if you find this one, you'll be a South Korean National Hero, probably)
Babe Comes Home, 1927
Graft, 1915-1916
Anders als die Andern (or Different from the Others in english), 1919
Idaho, 1925
Silhouette Fantasies, 1916
The Dream Woman, 1914
Pudd'nhead Wilson, 1916
Tons of George Mélies and Lumière Brothers films
And of course, the legendary Cleopatra, from 1917, and tons of others I'm just too bored at this point to write

The best way to know is to see check, one by one, the movies you have until you have one you can't safely and easily find on the internet, then, you know you have one.

Finally, I'd recommand to check the historic category here

If you indeed have lost media this ancient, its probably here.

There have been rumors going for years about a complete print of "Der Golem" (1915) but so far there's nothing to back it up. There is actually a YT post (https://www.youtube.com/watch?v=2A0lMPde6q8) that claims to be it but no, this is the 1920 film ""The Golem: How He Came into the World". Only a four minute clip of the 1915 film is known to exist (https://www.youtube.com/watch?v=jaWMJNlJQTc).

allthat182 Sadly no. I wonder if classicgamer saw our posts, I'm waiting for his reply.

Nice!

Let me know when you find anything of value.