Tenth character in the VIN is the year designator, easy to spot because it's the first of the two letters in the middle of a string of numbers.  L='90 and M='91.  Vanagon year letters run from A (for '80) through M, skipping letter I.
Stephen 

    On Thursday, March 17, 2016 3:54 AM, "SDF ( aka ;jim lahey' - Scott )" <scottdaniel@TURBOVANS.COM> wrote:
 

 I have a white 90 or 91 GL.
the production date is 3/91 ..

Anyone know the letter in the Vin that indicates year model for those
years ?

I know what it is for earlier vans, like up to 85 ..
not sure if they go letter by letter though through the whole range up
to 90 or 91.
is my a 90, or a 91 ?
thanks !
Scott

On 3/16/2016 5:13 PM, John Rodgers wrote:
> I just listed my Carat on CraigsList Birmingham, Alabama. Notice it is
> OBO!
>
> http://bham.craigslist.org/cto/5494617242.html
>
> JOHN
>