Hi Mart,
if you look at the three sites I supplied, you'll see they also put the Mark at Turriet & Bardach, also I found another buckle they did in silver plate that was not so fancy and just straight lines, so I guess they did all different forms, also if it is Turriet & Bardach, it could not be later than 1911, I was told that's when the Company dissolved.
Thanks,
Kevin