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Click on image for the lowdown. 
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| | | Forums66 Topics128,019 Posts1,055,343 Members48,419 | | Most Online14,466 Apr 26th, 2026 | | AD Chevy Trucks Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
Lots of work on Brad's part ... pure enjoyment (and references) for you!
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For helping keep this great
old truck web site
on the Internet for over 30 years! and not clogged down with Ads! Again, thanks! | | | | Joined: Oct 2002 Posts: 28 Junior Member | | Junior Member Joined: Oct 2002 Posts: 28 | My art deco truck has NO chrome. That's enough for me to guess its a 44 to 46i. Came from the upper midwest so probably made in Janesville. Plate says vehicle weight is 4000lb. number is = 21 OS 05 4166 which I decifer to be a Janesville 1946(interim) 1.5 ton made in May. :confused: So here's my confussion: Was it made in May of 45 or 46? If made in 46 would it be month 17? If OS means 1.5 ton then what does 4000 printed on tag mean? | | | | | Joined: Mar 2004 Posts: 6,212 'Bolter | | 'Bolter Joined: Mar 2004 Posts: 6,212 | My Parts Book shows "OS" as being 1946 first design and "PK" as being 1946 second design...both are for the 160" wheel base 1-1/2 ton truck. No listing shown for 1945. Mike  | | | | | Joined: Mar 2005 Posts: 59 'Bolter | | 'Bolter Joined: Mar 2005 Posts: 59 | a 45 should be a 21MS37xxxx to 21ms48xxxx if they made it to december
i have a 44 1.5 with a serl# of 21MS28xxxx
if it has plastic window cranks, leather around gas filler and no chrome/stainless it would be a war production truck or start of civilan production using left over parts.
21 janesvill wi OS 46 interim 160" wb 05 month of may 4166 number of build starting with 1001 | | |
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