[T3] Well now this presents a conundrum! NOS 6 VLT Fan BELT??

[elvisleft_bldg at comcast.net]

Hi Everyone.. I looked at these belts, and mine is much skinnier.. Parts Book has it for my engine as replacement.. ??? Wondering what yall think 
Type 3 NOS Fan Belt VW Part No 311 903 137A 

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