Titleist Mystery Blades, Help Identify!

[TitlePured]

I'm looking for help in identifying this set of Titleist blades that I've acquired.  I think they are probably a prototype or tour iron in the 2000 to 2004 era considering the similarity to the 660-690 model irons.  The muscle back has a reverse curve and heavier toe than the typical 600 series irons, slightly more compact than the 690s.  I believe the True Temper NDI shafts and cord grips are original and would support that early to mid 2000s timeline.  I've included pics of the stamping also as they match the iron number but there are no serial numbers.

 

Any help would be greatly appreciated!

 

 

 

Edited December 2, 2020 by TitlePured

[ebk]

 I don't know much about old Titleist irons.  However, those are gorgeous. Congrats.

[bogeypro]

Those look awesome.  I originally thought 681 blade.

[Fairway14]

7 hours ago, TitlePured said:

I'm looking for help in identifying this set of Titleist blades that I've acquired.  I think they are probably a prototype or tour iron in the 2000 to 2004 era considering the similarity to the 660-690 model irons.

 

Any help would be greatly appreciated!

 

 

 

You answered your own question, that is prototype or for Tour play.

Edited December 3, 2020 by Fairway14

[Nard_S]

What an awesome find.

[Old Tom Morris]

Anyone know anything about the shafts?

[boggyman]

Post over in the Classic forums. They’ll help you tremendously over there! 

[bladehunter]

10 hours ago, TitlePured said:

I'm looking for help in identifying this set of Titleist blades that I've acquired.  I think they are probably a prototype or tour iron in the 2000 to 2004 era considering the similarity to the 660-690 model irons.  The muscle back has a reverse curve and heavier toe than the typical 600 series irons, slightly more compact than the 690s.  I believe the True Temper NDI shafts and cord grips are original and would support that early to mid 2000s timeline.  I've included pics of the stamping also as they match the iron number but there are no serial numbers.

 

Any help would be greatly appreciated!

 

 

 

 

 

super jealous of that find.  I have a similar set but I’ve worn mine out.  
 

timeline is correct.  I’d guess 2000-2002.  
 

it’s either a tour players set or a made to order retail custom grind set.   The no rings on the hosel and hand stamps are the dead giveaway.   Here a pic of my sets pw.     By the way.  Sets like these are being asked around $3500 for.   In great condition.  My set I’ve worn the faces out.  But yours appear unused.  And has the 2 iron.  

Edited December 3, 2020 by bladehunter

[Oh Hi Carl]

Beautiful club.  Mind saying where you located them?  

[Skipperation]

Wow.

 

They seem to have abit of the 695MB look about them, especially the sole shapes and lack of 'bulge' on the curved muscleback. The 695mb were also a little more compact from heel to toe than the 690 as you mention these are so maybe a proto/tour only prior to the 695mb release? Made them look like 660/70/80/90 in the pros bag for us punters but abit of a new design?

[Tree Levino]

Those are SICK.

[larryd3]

Beautiful irons.  Great find!

[EDT501]

Would.

[TitlePured]

16 hours ago, bladehunter said:

 

 

super jealous of that find.  I have a similar set but I’ve worn mine out.  
 

timeline is correct.  I’d guess 2000-2002.  
 

it’s either a tour players set or a made to order retail custom grind set.   The no rings on the hosel and hand stamps are the dead giveaway.   Here a pic of my sets pw.     By the way.  Sets like these are being asked around $3500 for.   In great condition.  My set I’ve worn the faces out.  But yours appear unused.  And has the 2 iron.  

 

Good looking set of irons there, very 681 without the hosel ring.  The interesting thing about the irons that I have are the reverse curve of the muscle, for a Titleist iron it's something I haven't seen before.  Other than the 695mb,  which looked to be a departure from the previous 600 series forgings in finish and feel.

[TitlePured]

6 hours ago, Skipperation said:

Wow.

 

They seem to have abit of the 695MB look about them, especially the sole shapes and lack of 'bulge' on the curved muscleback. The 695mb were also a little more compact from heel to toe than the 690 as you mention these are so maybe a proto/tour only prior to the 695mb release? Made them look like 660/70/80/90 in the pros bag for us punters but abit of a new design?

That's what I'm thinking maybe a custom or and in-between prototype before the 695 was rolled out... look and feel closer to the 670/680/690 but more toe weight and slight longer hosel.

[TitlePured]

On 12/2/2020 at 5:36 PM, Old Tom Morris said:

Anyone know anything about the shafts?

I tried researching this as well... couldn't find much.  If anyone can chime in it would be greatly appreciated.  From what I did find, the NDI was a custom True Temper option for many years.  To me, the design is very similar to some of the newer steel shaft designs, a mid to high kick point with unique stepping and a stiff tip like the PX LZ or Modus 120.  Although they weren't lightweight, similar to the Dynamic golds around 130 grams.  A True Temper custom fitter might be able to add more about the characteristics of this shaft.

Edited December 4, 2020 by TitlePured

[gambit]

I'd love to chunk and skull a few with these beauties.