Wow Norman! theres a beauty of a Glasgow!!!
Nice job of getting it cleaned with patina still intact.
While the date is likely proper for the sword and its hilting it is not necessarily the date of the blade.
It is likely an earlier Solingen blade, but the slipper (cutler) probably added these spurious markings for obvious reasons. The ' Passau ' wolf (notably used by Solingen)was of course well known to these cutlers, and this is a fairly ubiquitous rendition of the usual form. These were often seen of course on Solingen blades with numbers presumed to be dates on either side (16....wolf...56)however the wolf on Solingen blades was typically upside down to the numbers.
It is unusual also to see ANNO (in) on one side while a date (or perhaps number combination on the other.
These were hilted during the long Jacobite troubles period beginning c. 1689 and going on into the 18th c. with the '15 and '45 the most well known events. The 'magic' of these well known inscriptions and markings of Solingen were not lost on these cutlers, so their addition of them to extant blades in those times would have been well placed.
A toast of the Drambuie to this one!!!!!
aye!!!!