I purchased a Casio GA 2100 2AER online from a Casio authorised dealer from Russia. It's a popular retail chain and it was listed on casio's European website . The watch came in a tin within a cardboard box. I noticed that the barcode on the box didn't match the barcode on the watch tag. The barcode on the box was of another version of the same model. This had me a bit concerned. Is it common to find g shocks in mismatched boxes even when buying from authorised dealers ?