Hello Kit builders et al.

Was not sure I should post this question in the "prototype" or in "kit building" channel but here we are.

RE:
Walthers Scenemaster 949-11001
Scale(s): 1:87 Scale, HO Scale
GM Part Number: WH949-11001
CABLE EXCAVATOR WITH BUCKET KIT

I hope to show results if I can get around to it but I would like to know what the actual manufacturer of the prototype and get recommendations for what the painting was/might have been of this steam shovel and the exact time period.
1950s? If so when and what nations used it.

The details I found are very broad on some of the descriptions.
I do like the grey and blue for the 50s even though I am pretty sure that Caterpillar started with yellow much earlier.
So if I do go yellow I will have to weather it quite well to give it a patina. Its just looks too bright for early Era III.

But who actually made these? Anyone know?

Thank you for reading
- Mark

I would guess that Kibri/Viessman makes it. They make all the Walthers crane kits and reach stackers.

Yes Alan, thank you. That is correct, as stated I know the kit maker, I am looking for the manufacturer of the prototype.
Be that as it may, wondering if there were steam shovels in either Holland, Germany, Italy or France in the late 1950s of this particular kind.
Also if I could find one in old black and white photos, it may also be hard to determine the colour/"livery" when viewing in the black and white photo.

Thank again for feedback,
Mark