Underslung tender springs

[Londontram]

I want to alter a tender with "normal" tender springs over the axle boxes to an earlier type with underslung springs.

 This photo came off the Caledonian forum and dates from about 3 years ago the chap that posted it thought he'd possibly got the underslung springs and axle boxes from 5&9 developments but Chris at 5&9 insists there not his.

 

 Does anyone recognise them or have an idea who might be able to supply them or something similar.

     Thanks Steve

 Here's a look at the type of tender I'd like to build, it's an early Caley Drummond Jumbo tender 

Edited November 27, 2019 by Londontram