Roman Matrix Seal

Welcome!
What you have is a triple matrix swivel fob seal. These tend to date from the late 17th to early 18th century; a better look at the heraldry in the matrices might help us to pin it down better.

many thanks to both of you will try to take a better pictures soon

It seems one face of these triple seals tends to be reserved for a monogram. I believe this is your first pic. The three diamonds are formed by an ornate W and M atop one another. I believe the M stands for the surname, as the second pic's arms are flanked by what look like two M's. The crest of these arms (above a helmet above a shield) seems to show the head and neck of a swan. The crest in the third pic is a bird with wings outstretched, I think also with a curved swan's neck. I think I see, in the main arms of the third pic, the curved neck and head of yet another swan. The last few letters of a motto are visible at the upper left; an H, perhaps followed by a T (remember, this image is backwards). There are English families by the name of Moore, particularly in Shropshire in the 17th century, that had varieties of arms with a swan figure, paired with either a swan or swan's head as the crest.
Another thing: the arms in the second pic are in the form of a shield, which usually indicates a man, but the third pic has them in an oval, which was the presentation for armigerous women. Husband and wife?
Let us know if you find out any more!

HI, just to let you know that I found one very similar in British museum ( http://www.britishmuseum.org/resear...40&partId=1) ,surprisingly that one has the same MM initials but what strikes me the most is that handle of the seal is exactly the same which means that both seals are made by the same maker. Anyway I am still confused as I can't make any connection yet, my seal came from Sirmium (former Yugoslavia http://en.wikipedia.org/wiki/Sirmium ). I took some pictures comparing both seals and will post them later, Again I would be very grateful to hear your opinion :)

The link to the British Museum doesn't work, but I noticed that one of the designs resembles a symbol associated with Scotland--a thistle flower flanked by two leaves.
The center design gives the general idea of what it looks like:

I see that now--thanks for the link. Obviously, the details and construction may suggest they're from the same general region, date, or perhaps even maker.
By the way, I wasn't thinking of the seal design that appears to have wings, but the one with the crown over the flower/leaves. Here's another rendition with the crown: