If you have not paid millions for it, it is a reproduction.
If you have, it might be a good idea to talk to an art gallery or a museum.
You can find more information about Rembrandt by checking the Rembrandt website. There they offer all the information you need including chemical make up.
I cannot find a bull etching by Rembrandt. The most famous series of bull etchings is by Picasso, 1945.
One can find paintings by Rembrandt from the following sources: Wikipedia, BBC, Science, New York Times, National Trust, Rembrandt Painting, National Gallery.
Rembrandt van Rijn or just Rembrandt.
There are many places to find information about the Rembrandt Hotel in London. The best place is their official website. Other sites include Trip Advisor, Expedia, and Booking.
REMBRANDT. has written: 'The Compl ete etchings of Rembrandt'
The address of the Rembrandt Public Library is: Main St 7 Broadway, Rembrandt, 50576 0186
Rembrandt lived 1606-1669, so it is highly unlikely that he should have painted much in 1814.
Probably not by today's standards since then it was not possible for Rembrandt to use Rembrandt.
The cast of Rembrandt - 1976 includes: Rembrandt van Rijn Rembrandt van Rijn as Himself - Subject
The cast of Rembrandt - 1925 includes: Victor Potel as Rembrandt
Rembrandt is his first name! His full name was Rembrandt Harmenszoon van Rijn.