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Seriously I believe having Gold lettered Bir doesn't help. And since it is Gold, less Sikhs would be given Darshan and allowed to read the Bir. All the while person thinking he has done 'Sewa'. Many would say they are trying to provide the best sewa to Guru. I think the Guru doesn't need worldly things, the best sewa a Sikh can do is by being BEST SIKH of Guru!