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Title: Grey Market product from Amazon - Beware!
Review: According to my invoice, the item was sold directly by Amazon.com, LLC. However, when I shipped the item in for warranty repair, Tamron informed me the lens did not have a serial number which probably meant it was a grey market product. Because there was no serial number, the warranty was voided.I don't know where this serial number is supposed to be, but I doubt it fell off. This can only mean Amazon is sourcing this product from a questionable source hoping that there will be no need for repair.Amazon did however return the item for a full refund. They did not explain how the item could come without a serial number.I don't know how this happened but it does cause me to be concerned about where they are getting their products and if they are going to be covered by warranty.
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