I don't have any passenger cars, only the 2 diesel locomotives. I will try to upload some photos of them shortly

I have 2 diesel locomotives I am trying to sell but I can't seem to find out exactly what they are, any help would be appreciated!

The box is just "Williams Electric Trains" (No mention of Bachmann, makes me think it was pre-acquisition)
"Diesel Locomotive"
"3 Rail 'O' & 'O-27' Gauge"

The side where it would usually list the model name/number is just a blank white box. It says with handwritten pen "Penn. Shark - A".  The locomotive itself is all black with 1 gold stripe going horizontally across the center and "PENNSYLVANIA" written in the same gold color on it. The car # is 9632 (and I have another identical one with car #9633).

The box itself is grey, and in the bottom right there is a small diagonal red band that says "The Crown Edition Line".

I have tried a google/etc search but I can't seem to find the official name/model # for these 2 trains. Can anyone help!?