When I saw the jeep for the first time in July 2010, the car only consisted of the chassis, the body was not available.
The original ID-plate from the frame near the bumper was available and stated that the jeep had the frame number "MB158963".
The same number was also stamped on the top of the left frame member near the front axle. This is clearly a post-war stamp, since these stamps were not used during the war.
Nevertheless the stamp is a further hint, that the number from the id-plate should be correct.
The following picture shows the kind of ID-plate for "chassis number on the Jeep Standard MB, chassis number 125809 up to 288687 (February 1942 - December 1943)" (BeDe94, p.94)
and therefore correct for MB158963.
The caption of the picture states: "zinc plate with the chassis number on the left side rail - inside behind the bumper".
This description fits to the ID-plate on the jeep.
Also other details of the chassis fit to the frame number. The batterie-holder is made of a single piece. This fits to the description
in the book of Becker and Dentzer (BeDe94, p.48). The book states, that for the chassis of the Willys 'Standard' and 'Composite' (February 1942 - September 1945)
chassis number 120600 - 459874 "the battery holder is composed of a single simple metal base" (BeDe94, p.48).
This description fits to the battery-holder on the frame like the following picture shows.
All these informations indicate that the frame number is plausible and fit to the other details of the frame.
In a first step I wanted to find out the date of delivery (dod) of the jeep. For this purpose I used several books.
In the book "The standardised War-time Jeep 2" by John Farley a table denotes the delivery dates on a monthly basis. In this table is stated (Farl09, p.305):
  | Date | Chassis No. |
---|---|---|
  | [...] | [...] |
  | July 1942 | 155499-163000 |
  | [...] | [...] |
  | Serial Nr | Date of Delivery |
---|---|---|
  | [...] | [...] |
  | 158268 | 13.07.1942 |
  | 160665 | 21.07.1942 |
  | [...] | [...] |
These two dataplates indicate that the dod of MB158963 lies somewhere between Monday, 13th and Friday, 17th July 1942 and thus I could further narrow the probable range of dod. Based on this information I did a linear interpolation of the dod, based on the Chassis numbers.
The result shows that the interpolated dod of MB158963 is
Wednesday, 15th July 1942.
Of course it's only an interpolated value, but finally I decided to use this date as the dod of MB158963.
The dod has several implications on certain details of the jeep, since several changes happened to the jeep over time (for this topic also see section
dod-related details).
The following information is taken from the 2nd jeep book of John Farley (Farley09). According to this book, the dod of MB158963 lies in July 1942 and was part of an US Army contract DA-W-398-QM-189 S/M2428.
The Chassis Range of this contract was MB155499 - MB163000. The registration numbers of this contract for July were 20209017 - 20215518 (Farley (2009), p.60).
The first volume of the series "The evolution of the Willys-Overland MB Jeep" by Lloyd White provides further information about this contract:
"Contract DA-W-398-QM-189 pertained to the British, Russian and Chinese jeeps which were basically an export version of a standard MB jeep. [...]
The 'DA' of this contract stood for 'Defense Aid' and was part of the pre-war Lend Lease efforts by the US to aid our Allies by fulfilling their
light vehicle needs." (WhV114, p. 368).
The text further states that "the British contract jeeps were ordered on their primary contract, SM 2275. [...] There were also a series of subsequent
smaller quantity contracts as the need was refined." (WhV114, p. 369).
In the book of Becker and Dentzer also some information about the contracts is provided:
  | Contrat |     | Numéro d'enregistrement |
---|---|---|---|
    | [...] |     | [...] |
    | DA-W-398-QM-189 |     | 2078691 - 2083803 |
    | [...] |     | [...] |