Final clue to our West Berks mystery pic

How are you getting on with identifying our mystery pic? When we posted this quizzical picture last weekend, it certainly started some head scratching... the only clue was that West Berkshire CAMRA and real ale fans might just have an advantage in identifying it. But not exclusively.

Here's a final clue before this weekend's reveal:

Look to your nursery rhymes for a 16th century moral against doing harm to animals...

For those who prefer numerical clues: 372