The bag that made me fall in love with
Coach the the Legacy Shoulder Flap. It's such a nice saddle bag shape with a huge turnlock. I just adored it! Unfortunately, the heat sealant started peeling off and I sent the bag in for repair. I got the store credit and took it to a boutique and got myself a XL Zoe.
I am not sure what is my signature bag, but my first actual Coach bag I bought was a Large Khaki Signature Carly. I took her home and carried her for two days inside my home and it was so heavy and I wasn't keen on the fabric folding and so I returned her for a refund.
A couple of months ago, I went to the outlet and saw the Large Black Leather Carly with the nickel hardware. It was on the clearance shelf for less than half the retail cost. Of course, I picked her up and took her home.
So, over a year after I purchased my first Carly, I have (and now keep) a full leather version that I totally adore and no fears of fraying fabric.
I have come to realize that I adore black, thick luscious leather, nice 'fishy' Coach leather smell, amazing YKK heavy zippers, and a nice braided leather strap. All this combined together would point me to the 2007 Bleecker line. I have the medium Bleecker duffle but it doesn't have the gorgeous braided strap. The leather smells spectacular. I do have a few smaller 2007 Bleecker bags with the braided detail so I am happy with that.
If it came down to choose two signature bags I would carry often it would be the Zoe/Carly and the Bleecker in running.