Whatever it is, it's terribly heavy.
3 seconds sound clip from the The Mummy (1932) movie soundboard.
You can hear this line at 00:04:34.600 in the Blu-ray version of the movie.
Quote context
[...]
- Maybe he got too gay with the vestal virgins in the temple.
- Maybe the answer's in that box we found buried with him.
- The Wood's so rotten, it'll fall apart at a touch.
- Whatever it is, it's terribly heavy.
- Metal. Looks like copper. It's gold.
- I say! Look here. The unbroken seals of the Pharaoh Amenophis.
- Good heavens! What a terrible curse!
[...]