Anyone good with Pullman lot numbers?

[wcfn100]

So I got my drawing for a PS low-deck 89' flat but there's nothing on it to indicate what 'model' of flat this is.  I had bought this hoping for a F89CH.  I'm wondering if anyone knows how/where to mach the lot nos. with the car type. 

Here are the lot numbers:

8904, 8921, 8932, 8920, 8931, 8951, 8962, 8979, 8999, 9012, 9024, 9023, 9040

Thanks,

Jason

[cv_acr]

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