You don't see many of these listed - 5513 underline

[mcjp6]

my grail, and already outside my current budget.....

http://cgi.ebay.com.au/ws/eBayISAPI....#ht_5546wt_932

[rustedmetal]

I've seen the dials alone climb upwards of 10k

[kyle L]

5 days to go...

[Racer X]

Don't know much about 5513s, but the hour markers seem a bit moundy (as opposed to flat). Is that how these dials were originally made? My first impression is that the dial looks relumed, but maybe they are supposed to look like that.

[johnbeth]

at the bottom it says <25 is that normal??

[mcjp6]

Originally Posted by Racer X

Don't know much about 5513s, but the hour markers seem a bit moundy (as opposed to flat). Is that how these dials were originally made? My first impression is that the dial looks relumed, but maybe they are supposed to look like that.

The earlier dials in the sixties were often quite "puffy" or moundy, quite normal...

Originally Posted by johnbeth

at the bottom it says <25 is that normal??

Yes, again normal, and the combination of T - <25 and swiss is the transistional period from radium to tritium.below is a quote from our good buddy Orchi (from VRF) on Swiss underline dials, he tells it in much more detail than I could.


"Err...due to regulatory requirement by the authorities...
for the use of Tritium to replace the hazardous stronger...
radioactive Radium(in tiny minute amount) as the fusing agent
to ignite Phosphorous...that were mixed with paint & boding compound...
at the time(early 60s)...to make the mixed compound luminous in the dark...
the "underline" was added to "SWISS" Dials that were remaining
in stocks...or those Dials that were on Dial's manufacturer's stocks...
to indicate...the usage of Tritium...as there was no clear
guidelines by the authority on any type of markings to be used...then.


Soon later...single "T" plot on each sides of the "SWISS" markings...to mark
the usage of Tritium...
were added on some Dials in stocks that already had the "underline" marking.

Soon after that...it was compulsory to have "T" marked on Dials...which later
indicated compulsorily...the amount of radioactivity of "< 25"... <br>
So there were also some Dials...even marked with added "SWISS-T<25" with "SWISS"... <br> or "T SWISS < 25"...may be. <br>
It was earlier thought by many collectors or even in published materials...
that the use of Tritium...began from 1960...that may NOT be true anymore...

There are evidence pointing to the use of Tritium(fusing agent in tiny smallest
quantity to ignite Phosphorous) was mixed to the paint compound as luminous material...even as earlier since...1958.

Oh btw...Orchi was recently told also...that ROLEX in its entire history of
producing ALL watches with Tritium marked Dials & Hands...had only consumed
a very small amount of about ONE KILOGRAM of Tritium...ONLY.

Believe it or not...

Best regards
Orchi."

[Racer X]

Originally Posted by mcjp6

The earlier dials in the sixties were often quite "puffy" or moundy, quite normal...

Good to know. Thanks Michael.

[johnbeth]

Originally Posted by mcjp6

The earlier dials in the sixties were often quite "puffy" or moundy, quite normal...




Yes, again normal, and the combination of T - <25 and swiss is the transistional period from radium to tritium.below is a quote from our good buddy Orchi (from VRF) on Swiss underline dials, he tells it in much more detail than I could.


"Err...due to regulatory requirement by the authorities...
for the use of Tritium to replace the hazardous stronger...
radioactive Radium(in tiny minute amount) as the fusing agent
to ignite Phosphorous...that were mixed with paint & boding compound...
at the time(early 60s)...to make the mixed compound luminous in the dark...
the "underline" was added to "SWISS" Dials that were remaining
in stocks...or those Dials that were on Dial's manufacturer's stocks...
to indicate...the usage of Tritium...as there was no clear
guidelines by the authority on any type of markings to be used...then.


Soon later...single "T" plot on each sides of the "SWISS" markings...to mark
the usage of Tritium...
were added on some Dials in stocks that already had the "underline" marking.

Soon after that...it was compulsory to have "T" marked on Dials...which later
indicated compulsorily...the amount of radioactivity of "< 25"... <br>
So there were also some Dials...even marked with added "SWISS-T<25" with "SWISS"... <br> or "T SWISS < 25"...may be. <br>
It was earlier thought by many collectors or even in published materials...
that the use of Tritium...began from 1960...that may NOT be true anymore...

There are evidence pointing to the use of Tritium(fusing agent in tiny smallest
quantity to ignite Phosphorous) was mixed to the paint compound as luminous material...even as earlier since...1958.

Oh btw...Orchi was recently told also...that ROLEX in its entire history of
producing ALL watches with Tritium marked Dials & Hands...had only consumed
a very small amount of about ONE KILOGRAM of Tritium...ONLY.

Believe it or not...

Best regards
Orchi."

Michael, Thanks for the explanation. Ive seen the dial before and wanted to understand what it was!

Thank you!

John

[AK00]

2 Double T < 25 imprints

The thing that bugs me is the OYSTER PERPETUAL lettering "SPACING".

Seems too close....read somewhere on an underline with this trait.....