the value of a 5513 i see from 2000 - 5000 Euro.
5000 whould be a complete watch: all papers, box ect - all tritium (hands, dial + pearl) in an exellent condition - recently serviced.
2000 whould be a beater from the late 80s without bracelet ...
things to check : all original ? dial not repainted - original insert ... same serial on movement and case ?
serial in the papers is the same on the case ? service history ? stretch on the bracelet .
all tritium ?
if you not an expert i whould recommend an 14060 all tritium - still cheap and easier to find value will go up .
cheers,
Frank