Vintage B&O Railroad Bemis & Call Monkey Wrench / Worth anything?

[FatMatt_92fs]

This is my first post, My name is Matt. I'm from NE Ohio. I have a question about a Vintage Bemis & Call Monkey wrench No. 100 12". So basically I have been renovating vintage tools and selling them on eBay. I found a wrench today with the markings " B&O R.R.". I just was wondering if this has any potential to be valuable. Thanks Matt. I attached some pictures, because whats a thread without pictures right.

[Papaw]

That's a nice wrench, and looks to be in good condition. The RR marking helps a bit, but only to someone collecting items from that railroad. There were many of those produced, so they are not rare.