Just found it I think Norman,
In Boccia & Coelho (#726) there is an Italian smallsword (c 1680-90) with virtually this exact type blade, and the quad dots next to the 'eye' with dot, fuller etc.
In this case the 'Tomas' is on obverse side of bade while 'Aiala' other.
In this case this tang would insert directly into hilt as seen here, and there would be no 'stem' type ricasso as with rapiers.
I'll try to get a pic, but always a challenge with my antiquated tools (and me

In Wallace (1962) it is noted that in many cases Italy used the Tomas Aiala name, just as did Solingen. In this case this could well be a Solingen blade in Italy, or other way around but used on smallsword rather than rapier.