Screw or link couplers on GNR locomotives

[sncf231e]

I have seen pictures of GNR Atlantics, like the 251 in York, with 3-link couplers at the front. I wonder (and cannot find pictures (and York is a bit far for me)) whether at the rear of these locomotives also a 3-link coupler was used or that screw couplers were used.

 

Any information welcome. 

 

Regards

Fred

Edited December 29, 2019 by sncf231e

[Wickham Green]

Various railways used more economical three-link couplings on the front of their passenger locomotives as they weren't expected to be used in normal traffic ! ..... the tender will have a screw coupling for attaching to passenger stock.