I suggest casting your eye somewhere else.
"L" plant codes are unusual, and most of them with Made In US creeds are fake, especially since most of them also include the invalid monthy code "P" like this one, also fake and which also includes invalid creed wording that had been discontinued by the end of 1996:
http://www.ebay.com/itm/COACH-Auth-Vintage-Supple-Black-Leather-Patricia-Legacy-Flap-Cross-Body-Bag-9951-/221081310393?pt=US_CSA_WH_Handbags&hash=item33797914b9
There are several others with the known fake serial number P1L-9951, both by the same seller and both also fake:
http://www.ebay.com/itm/COACH-9951-brown-leather-Patricia-shoulderbag-purse-classic-/150868761078?pt=US_CSA_WH_Handbags&hash=item23207a99f6
and
http://www.ebay.com/itm/COACH-9951-black-leather-Patricia-shoulderbag-purse-classic-/160855731805?pt=US_CSA_WH_Handbags&hash=item2573bfae5d
"L" is a valid plant code when used in bags made in Thailand but it needs very careful examination if the creed says the bag was made in the US.
Another thing that all threse fakes including the probable fake you're asking about have in common is how the inside pocket zipper is mounted, there should never be a piece of leather that wraps around the closed end of the zipper - the zipper material should extend to the edge of the pocket trim. The first pic below shows the incorrect mounting which is also in yours, note the piece of leather at the left or closed end of the zipper. Then compare it to the other photo of a genuine zipper in a Pat's Legacy from the same year. In fact the whole zipper and the stitching and alignment on "yours" is really sloppy - Coach usually manages to install their zippers in a straight even line.
Here's another fake, an "H4B-9951" serial with a much-too-puffy creed stamping, a fake top zipper pull and a really badly aligned serial number, note that it has the same wavy zipper and leather edging at the zipper end, and in addition, the seams on the base are wrong - there should only be a single seam in the center.
http://www.ebay.com/itm/Auth-Coach-Black-Leather-Cross-Body-Handbag-Purse-Bag-9951-Patricias-Legacy-/251004640352?pt=US_CSA_WH_Handbags&hash=item3a710adc60
FAKE.