oops, miscounted... 2014 (fixed above)
it's easy actually once you know that chinese fun vehicles use proper vin codes
first is country of origin, (L is china in this case)
that's part of the WMI (world manufacturer id), (L6K is shanghai Howhit)
followed by the internal model code (DB1509)
followed by model year code
starting in 1971 with 1; numbers, then letters, rolling over every 30 years
I,O,Q,U and Z are dismissed to prevent ambiguity with 1,0,0,V and 2
so 123456789A BCDEFGHJKL MNPRSTVWXY means your D is either 1984 or 30yrs younger 2014
and finally a running serial number
(not all numbers need to be used, can include a manufacturing week for example)
which in your case is not entirely unlikely .. 10th week (makes it a march 2014)
but one would have to ask howhit for exact details there.
'sid