10 digit Vin?

[Travlr]

I have two trucks, one has a vin: L-245-2198 and it appears to be an older truck. The other truck has the vin: 2661161723

I found the Vin Decoder so thanks for that. The older vin/truck decoded just fine so I now know it is a 1958.

The second vin came up as bad. The numbers are clear on the frame. The number on the dash tag is 61723 and I understand the prefix of 2661 is common to all M37 trucks in 1961/62... so it looks like an extra "1" is stamped between. But I'd like someone with experience to verify my thinking if possible.

I put the vin # in without the extra "1" and it decoded just fine. Am I missing something?

Thanks for any info...