Junk Half Tracks

[tankdriver]

Some of you may remember me from a few years ago. I had a Stuart Tank, and had restored a M20. Then due to daughters health I had to sell everything I owned. I now as my buddy says I "Traded trash for trash" and have 2 M3 half tracks.... Well with the shape they are in you might want to call them Quarter Tracks.... I'll put some photos at the bottom where you can see what I mean. Anyway, now to my question...

OK, Now the help I need.... I have gotten manuals, CDs, and books even Hunnicutt's book on half tracks trying to figure out the serial numbers. Does anyone know when the following half tracks were made, what the W stands for and anything else about them. Also what book I can find this type of info in? Are there any marking to show if they were cinvereted to anything else, M3A1 ect.

Thanks

1. Autocar
Mfg. Serial # M3 - 10181
Ord. Serial # M3 - 10181

2. Diamond T
Mfg. Serial # M36795W
Ord. Serial # 23052

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