Which of these famous publishing house logos has been in continuous use for the longest period of time?

The publishing industry has created some of the most recognizable and enduring brand logos in the world. These visual identifiers have become synonymous with literary excellence and cultural impact. Test your knowledge about the iconic logos that have adorned the spines and covers of beloved books throughout history. Can you identify which famous publishing house logo has the oldest origins?

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Penguin Books' penguin logo (introduced in 1935)
Oxford University Press' coat of arms (introduced in the 17th century)
Random House's house symbol (introduced in 1927)
HarperCollins' torch logo (introduced in 1990)