When I used the online barcode reader (at
http://online-barcode-reader.inliter...m/default.aspx), both barcodes came back with the correct number (17934999). The HS card's code type was "Interleaved2of5". The Ebay card's code type was "Code128". I have no idea what that barcode type stuff relates to.
From a google search....among other things...Code128 types are for alpha-numeric, all ASCII characters and used world-wide; interleaved2of5 are numeric only encoding digits in pairs