As part of my research i came to know that there is a considerable amount of searches for getting a Sample Authorization Letter, so i decided to show some sample of authorization letter that I made before. Check the sample as shown below:
Authorization Letter to get my Reimbursement from the Cashier
Dear Sir,
I Dexter Panganiban, authorize the bearer of this letter  Mr. XXX, my secretary, to get my reimbursement on my behalf.
I hope to get a favorable response.
Best Regards
Authorization Letter to get PRC Card
Dear Sir,
I Dexter Panganiban, authorize the bearer of this letter  Mr. XXX, my cousin, to get my PRC Card on my behalf. O have made this authorization letter because  I will be leaving for out of country staring tomorrow and I will not be available on time of my card’s release.
I hope to get a favorable response.
Best Regards
But you need to understand that sometimes, and Authorization letter will require a power of attorney signed by the lawyer or Attorney at Law. Most of the time it is being used when it involves a big amount of money or a big property. It is normally called Power of Attorney