Appy

Agreed. I am seeing something like corporal stripes on the cuffs AND really badly braided knock-off-looking majors' shoulder knots. The rest may have been thrown together from what had once been real pieces.

Well, the collar and cuff "litzen" are the first thing that tell me that its a Garde unit. The Schwarzer-Adler-Orden star (the so-called "Garde star") on the hilt is the second. Besides that, how are you figuring Garde-Train?

As I remember all of this, (Albert) Edward was Grand Master of the UGLE until he took the throne, when he handed over the job to Prince Arthur. Their youngest brother, Prince Leopold, 1st Duke of Albany, was also a Freemason, and was the Provincial Grand Master for Oxford, as I recall. I have no idea whether the middle brother, Prince Alfred, 1st Duke of Edinburgh (and also reigning Duke of Saxe-Coburg & Gotha in Germany), was a Freemason, or not. Anyone else know?

Meanwhile... of course... this is an Austrian order that dates to the waning days of the Holy Roman Empire. This fake looks pretty good in the photo.

I agree with James on the confusing misuse of titles for so many. For HRH Prince Arthur of the United Kingdom, First Duke of Connaught & Strathearn, he happened to be a prince (3rd son of Queen Victoria), but also a titled duke. As i recall it, royal decree dictated that his grandson would no longer warrant a princely (HRH) title, and would begin the use of the ducal title's prefix "His Grace" and also begin using the legally recognized surname "Windsor" -- all a bit confusing. Meanwhile, Prince Arthur was, or course, married to a Prussian princess - Luise Margarete von Preussen - who was the grand-daughter of the "Red Prince" Karl von Preussen. Prinz Karl was nicknamed the "Red Prince" due to his war service as commander of Husaren-Regiment von Zieten (Brandenburgisches) Nr. 3. it is no coincidence, then, that Prince Arthur found himself named as oberst und chef of the Von Zieten Hussars. If you look for it, you can find an image of Princes Albert Edward (the Prince of Wales, later Edward VII), Alfred (the British Duke of Edinburgh, and German Duke of Saxe Coburg & Gotha), and Arthur (the aforementioned 1st Duke of C&S) in German parade uniforms. Arthur wears what must have been stunning in color - an all red hussar colonel's parade dress uniform. He wears the PLM at his throat and the Royal House Order of Hohenzollern collar chain, the sash of the Saxe-Ernestine House Order's Grand Cross, and the breast stars of the British Order of the Garter, Prussian Order of the Black Eagle, and the Saxe-Ernestine House Order's Grand Cross, among other things. His medal bar appears to have a similar combination of British and German awards - from Bath to Hesse, and back to Saxe-Coburg & Gotha. Unfortunately, none of this pedantic contribution proves whether or not he was ever awarded the commemorative medals for the wedding anniversary of his brother or for the wedding of his nephew. I concur that these were frequently only awarded to attendees of the formal celebrations. In Russia, Grand Duke Mikhail Alexandrovich (the tsar's surviving brother) was on the outs with Nicholas II during the tricentennial celebration for the Romanov monarchy, and was barred from the festivities. Thus, he was also excluded from earning the medal for "being there." On the other hand, it is entirely possible / plausible that a warmly regarded brother and an idolizing nephew reserved a few of these as gifts for favorite siblings / uncles such as Prince Arthur. Let me put it this way... who would be in the position to tell the dukes that either was technically "out of line" for awarding these medals to Arthur, had they done so? Were they awarded, I suspect that few would really have had a problem with it.