Looking for Date of Mfg and Chassis S/N information for C15

[Sanne Ropke]

Dear all,
My dad and I have bought our Chevrolet C15 4x2 in 2016.
After hours and hours of renovation we are nearly finished. Now we are looking for a chassis number and a date of production.
All we know is the engine number : SR3931593 .

After investegation the engine number must fit between :
SR3930071 - 3842110014 - 26/aug/43
SR3931593 - 38421xxxxx - xx/xxx/43
SR3932052 - 3842121587 - 20/sep/43

Could somebody help us ?
Thank you very much.

With best regards,
Sanne Röpke