Less than $100 in exc condition. These were inexpensive pistols in their day, and have little to no collector interest.
ADDING: I agree with the above poster. This is a cheap and often unreliable gun, although I had one made in the middle 1980s that did work reliably. I paid $40 for mine brand-new. I'd say $65-95 U.S. dollars.
If you have a Titan made of steel and not alloy,in mint condition,it will fetch $200.00.
If you have an alloy Titan in mint condition will fetch $150.00. I paid 95(with hunter holster) for one that was about 85% but it was mostly chrome except for the frame.I fieldstripped & detailed it.I then polished the feed ramp & bought original magazines for it.It cycled every hollow I put thru it.It can be relied on to save your bacon,if you take the time to give it a "TUNE UP".
About $100 if operational. FIE was an importer of moderate cost firearms, mainly from Italy and Spain. No high collector interest.
100 USD or so if NIB
DO NOT ATTEMPT TO DO THS!!!!!!!!!!!
50 or so. ADDED-$200 for a mint steel frame Titan & $150 for a mint alloy frame Titan. (magnet will stick to steel frame).
A Titan .25 caliber pistol typically has a magazine capacity of 7 to 9 rounds, depending on the specific model.
A Titan 25 caliber pistol is worth between $75 and $200 depending on its overall condition. These small caliber handguns are designed for close range protection.
20-100
Like a Colt 25 auto
It is hard to say based on the info you have given exactly the age of the Titan 25 cal that you have. From my understanding they were manufactured between the late 60's and the late 70's. They were manufactured in Italy and distributed by at least 2 companies EIG and FIE, EIG imported them before 1968, and FIE after that date. So that should at least give you a rough idea of the age of the gun you have. I found a spattering of forum posts about the Titan 25's by doing a Google search. Here is one that give a little detail about the EIG version of this gun: http://forums.gunbroker.com/topic.asp?TOPIC_ID=67712.
25-60 USD or so
$25-$70, depending on condition. Imported by FIE, amde by various Euro gun makers, generally low cost, indifferent quality.
25-80