After Todd did some research it appears that the one on the left is the C & O 2705 and the one on the right is the B & O 4500. If you have any info to the contrary please let me know.

C & O 2705 also known as "Big Mike"

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Photo Date: June 1, 1985

Upload Date: August 29, 2010

Categories:

Dimensions: 1024 x 686

City: Baltimore B&O Museum

State/Province: MD

Country: US

Name: Baltimore and Ohio Railroad Museum

Uploaded By: Wendy Crim

Name: Crim Family

to comment on this photo.

Peter Huffman October 27, 2013 at 12:47 AM

That's right...2705 had the black front.

After Todd did some research it appears that the one on the left is the C &amp; O 2705 and the one on the right is the B &amp; O 4500. If you have any info to the contrary please let me know.