Prussian made (probably in Solingen) and conservatively the 1830s or back as far as soon after their independence.. It appears to be a diplomats type of sword and not a specific military pattern. Can you post all four sides of the grip for me? I cannot tell from the picture whether the grip scales are just missing or if the grip has been replaced. Or am I seeing paint that has been partially removed? at any rate, a better look at that may be telling. A military man's sword would have dispensed with the republica, etc. even for a dress sword. Possibly a presentation at the time. The Columbians were intent on diplomacy and emmisaries though so a diplomats sword is likely.
You may be able to detect a makers name or mark at the base of the blade under the counterguard or on the open side. The blade decoration and bluing points to earlier than 1830 but the blade type certainly common into the 1840s. The oak leaf and acorn pattern repeated on the grip ferrule and scabbard fittings has been pointed out as used for decoration as early as the 17th century but seems to have been manufactured by the mile in Prussia from about 1830 up into the 1850s. Past about the 1830 mark, the bluing would not be ending straight across, as we see here and become a trellis or foliate look. There is no definitive timeline for that though and blades from older stock appearing for decades after manufacture.
Cheers
GC