Luxardo 'Ardo Mintilla' -please help

Hi, i have an unopened, fairly old looking bottle of Luxardo's 'Ardo Mintilla' which i want valued. Can anybody help me? I have looked up Luxardo and they do not manufacture this type anymore.
Made in Italy, manufactured in Padova. 0.6L, 27% alc.
It is a circle shaped bottle with a clock in the middle.
Rd. No. 44153

I tried signing up as a member but the site wont let me upload a picture as i'm "not authorised". i will continue trying.
Any ideas?