Tissot Seastar N 450/154 Need Information ARGENTINA

[albertotuninetti]

Hi can anyone give some info about a Tissot N 450/154? I can´t find any where information about this watch here in Argentina thanks!

[tranceinside]

There is no such watch by Tissot with N series. Please check the back and provide the serial number.

[albertotuninetti]

There is no such watch by Tissot with N series. Please check the back and provide the serial number.

in the back there is a number that´s N350/450 and in the front on the bottom says N450-swiss i´m sending a picture maybe it can help

[tranceinside]

Okay, I have spend an hour and could not find the exact model anywhere. So please follow the instructions below and let me know. One thing i am sure is its from the 60s not before that. But its a vintage and rare timepiece.

Instructions

• 
  
  • 1Examine with a jeweler’s loupe the top portion of the dial of the vintage Tissot watch. Until the late 1950s or early 1960s, Tissot watches featured a slanted “Tissot” script. From the early to mid 1960s, Tissots featured an upright “Tissot” name in bold letters, usually with a “T” above the name (See References 1-2 and Author’s Expertise).
    
    
  • 2Examine the bottom of the dial. The word “automatic” identifies the Tissot as a self-winding watch. Absence of “automatic” means it’s a manual wind watch. Some Tissots, especially 1950s through 1970s models, may have “17 Jewels” or a different number of jewels printed at the bottom of the dial. A good quality vintage watch features a minimum of 15 jewels. (See References 1-2 and Author’s Expertise).
    
    
  • 3Insert a case blade under the lip of a snap-back Tissot watch and pry it open. If the Tissot features a screw-down case back, use the palm of your hand, a waded up ball of duct tape or a watchmaker’s sticky ball and rotate counterclockwise the Tissot case back to remove it from the case, according to Thewatchguy.homestead.com (See References 1-2).
    
    
  • 4Use the loupe to examine the inside of the case back. The Tissot name should be engraved above the term “Swiss Made.” The Tissot font should match the dial. Identify the type of metal used for the case and case back, such as “999” for silver or “9K”, “10K”, “14K” or “18k” for gold. In some instances, the name of an independent case maker instead of Tissot may be engraved.
    
    
  • 5Use the loupe to examine the movement. The Tissot name should be engraved on the bridge, which is flat sheet of metal covering part of the movement. Near the name is a serial number. For example, 2943525 dates the Tissot to 1953. A list of Tissot serial numbers and corresponding dates can be found online or from an authorized Tissot dealer.
    
    

[albertotuninetti]

Okay, I have spend an hour and could not find the exact model anywhere. So please follow the instructions below and let me know. One thing i am sure is its from the 60s not before that. But its a vintage and rare timepiece.

Instructions

• 
  
  • 1Examine with a jeweler’s loupe the top portion of the dial of the vintage Tissot watch. Until the late 1950s or early 1960s, Tissot watches featured a slanted “Tissot” script. From the early to mid 1960s, Tissots featured an upright “Tissot” name in bold letters, usually with a “T” above the name (See References 1-2 and Author’s Expertise).
    
    
  • 2Examine the bottom of the dial. The word “automatic” identifies the Tissot as a self-winding watch. Absence of “automatic” means it’s a manual wind watch. Some Tissots, especially 1950s through 1970s models, may have “17 Jewels” or a different number of jewels printed at the bottom of the dial. A good quality vintage watch features a minimum of 15 jewels. (See References 1-2 and Author’s Expertise).
    
    
  • 3Insert a case blade under the lip of a snap-back Tissot watch and pry it open. If the Tissot features a screw-down case back, use the palm of your hand, a waded up ball of duct tape or a watchmaker’s sticky ball and rotate counterclockwise the Tissot case back to remove it from the case, according to Thewatchguy.homestead.com (See References 1-2).
    
    
  • 4Use the loupe to examine the inside of the case back. The Tissot name should be engraved above the term “Swiss Made.” The Tissot font should match the dial. Identify the type of metal used for the case and case back, such as “999” for silver or “9K”, “10K”, “14K” or “18k” for gold. In some instances, the name of an independent case maker instead of Tissot may be engraved.
    
    
  • 5Use the loupe to examine the movement. The Tissot name should be engraved on the bridge, which is flat sheet of metal covering part of the movement. Near the name is a serial number. For example, 2943525 dates the Tissot to 1953. A list of Tissot serial numbers and corresponding dates can be found online or from an authorized Tissot dealer.
    
    

first of all thank you very much for the time you spent on this, i´ll get right on it fallowing you instructions.... yesterday I went to a couple of jewelries non of them new the model one told me that he had to travel to Buenos Aires wich is the main center here in argentina and ask around they have more knowledge than where I live. They didn´t open the watch though so i should go and make them open it and see what you told me to. What I know is that the watch was purchased around 1985.... I´ll keep you informed thanks again for the time spent

[tranceinside]

You can also simple attach this picture and write to Tissot customer service! I am sure they will help. I even checked the vintage collection on ebay.. but could not find this one.I am sure when you will open it and follow the instructions you will find the code which will help identifying it.

[areyafaith]

Hi,

i have one of these watches too! we are in south england! identical to yours

front

TISSOT
SEASTAR
N450-SWISS

back

SEASTAR
QUARTZ
N350/450
WATER RESISTANT 30M

first of all thank you very much for the time you spent on this, i´ll get right on it fallowing you instructions.... yesterday I went to a couple of jewelries non of them new the model one told me that he had to travel to Buenos Aires wich is the main center here in argentina and ask around they have more knowledge than where I live. They didn´t open the watch though so i should go and make them open it and see what you told me to. What I know is that the watch was purchased around 1985.... I´ll keep you informed thanks again for the time spent

[areyafaith]

Hi,

i took my watch to the jewellers, they took the back off and there were no numbers ingraved. The jewellers said the watch was about 1980