Sad to see this recurring problem Zach. I agree with Joe, it does look from your photo, that there appears to be a break in the front right leg, down close to the hoof - which may be the cause of the problem. Difficult to say when this happened - but the answer is a repair that is relatively simple to effect. Of course, the value of such pieces may make the solution daunting.
I'll explain - and try and show how such a fix may be undertaken - using a rather extreme ( and much cheaper) example.
Below, see a Johillco Mountie - as found, once the layers of paint and grunge was removed. Just concentrating on the legs of the horse for now, as you can see - he had no base at all (that's how they were made), which means the legs are always vulnerable to bends and fractures. This one had the front right leg missing altogether - and the rear right snapped off below the knee.
The answer was - to firstly make up a base from metal alloy sheeting. Then, each of the broken legs replaced by a wire armature and set into the body for the front leg, and into the stump of the rear leg - and the other two original legs drilled up into the hoof. Then, once the position of each hoof has been determined - drill a hole in the base to correspond where each of the four hooves will stand. I use epoxy resin glue to set each piece of steel wire in place for each leg and hoof - then when completely dried and solid - glue in place onto the new stand. When all is set, once again, I built up each "wire" leg with putty and model each leg - then repaint. Next pic. down shows how he looked after repairs and a repaint.
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I used as a "model" - a picture of an original piece - found on the Internet (bottom picture), to get the legs and positioning correct.
I hope you can see - from my somewhat extreme example - that almost any piece with "leg" problems can be fixed - and by comparison, your repair would be much easier. Looks like drilling and pinning up through the base, through the broken hoof and into the front right leg of the horse would fix it in place permanently. Maybe about a centimetre into the leg, should do it. Then, all that would be required is a retouch of the paintwork at the hoof, ( maybe with a dab of putty first to disguise the original crack), once all was set. Repairs done with a hand drill take a bit longer - but generate little heat, compared to the friction caused by an electric drill ( which can damage existing paintwork). So - with care - little damage need be done. You may also need to look at the back legs for this piece too - as continual flexing can weaken metal elsewhere too. I usually pin all legs that touch base when making up or repairing mounted figures - and have never had any problems thereafter.
Any competent repairer could undertake this fix - though maybe one close to home would be best of all, if you can find someone - as it's always better to collect - than rely on the post or other transportation - as that's where rough handling can cause many breaks and fractures, in my opinion.
Hope this helps - jb
