Mystery trotting horse long code

I don't know if anyone can interpret the code in the photograph better than I can from the base in real life - sharpened up by Photoshop it looks as if it might be MF17 325 or similar..

It is a smallish horse - pony size maybe - and thoughts were either a Cossack horse or possibly an Ancients one?

MYSTERY SOLVED - this is LCH 5s light cavalry horse prancing

Mystery octagonal base horses

Fairly clearly a trotting horse in the S range style, with an earlier (I think) octagonal base shape - basically a rectangle with the four corners snipped off.

There is no legible code on the bottom of the base but I do wonder if this is a home recast, given the overall roughness of the base.

ACH 5s Ancient cavalry horse trotting

MCH 1s Cavalry horse caparisoned trotting

MCH 2s Cavalry horse leather harnessed trotting

MCH 3s Cavalry horse Gothic armoured trotting

LCH 1s Light cavalry horse trotting

HCH 1s Heavy cavalry horse trotting

Two horses both marked HCH 1s. I suspect the one on the right is the later one.

HH 12 Heavy cavalry court trotting

This is one of the later additions to the range