That was of the 18th Dynasty.
2 seconds sound clip from the The Mummy (1932) movie soundboard.
You can hear this line at 00:38:16.320 in the Blu-ray version of the movie.
Quote context
[...]
- An unusual crime. A guard killed by a man who left a gift to the museum.
- A gift?
- A scroll. Part of which was transcribed when it was first found. Here is the transcription.
- I cannot read the writing of a period so remote.
- But you read the name of Anck-es-en-Amon on that piece of pottery.
- That was of the 18th Dynasty.
- These are Predynastic ideographs.
- Most interesting. May I see that scroll, Sir Joseph?
- So.
- I have something else to show you. A photograph.
[...]