RE Auto Topcor serial number and name ring description

[tao]

Welcome to the mflenses Teebain. There are not much info about Topcor lenses either on or off the web. The Topcon Story book written by Antonetto & Russo is the main source of information about Topcon cameras and lenses. Unfortunately the authors gathered their info from document available at the Italian branch of Topcon which might not be completed nor updated. Therefore there are lots of gaps and errors. This thread is a group effort to bring the information about RE Auto Topcor lenes up to date.

In your case the black 25/3.5 was not even mentioned in the book. All of the known serial numbers are overlapped with the silver V1. Your copy is indeed the very first black 25/3.5 with centimeter focal length ever found (so far). So unless we have a new challenger, you lenses will hold a special place in the hearts of all Topcon lovers.

BTW A&R said that 7,500 25/3.5 lenses were made in total. Noone know how many of these were black.

[tao]

It is interesting that A&R estimate that 2,000-3,000 copies were manufactured for this version. Your lenses might be a proof that more than 5,000 were made. Unless numbers were skipped.

[TKL]

[Mir]

(Silver) RE, Auto-Topcor 1:3,5 f=25mm Tokyo Kogaku Japan 9367295

RE GN TOPCOR M 1:1,4 f=50mm TOKYO KOGAKU LMIJ (15703887)

(Silver) RE, Auto-Topcor 1:5,6 f=200mm Tokyo Kogaku Japan 9833480

[Macca]

Another rare 85mm 1.8 for sale on ebay, well within known parameters of serial numbers but the price is definitely going up! Glad I got mine sooner.

Click here to see on Ebay

[kds315*]

[Oldhand]

[kds315*]

[Oldhand]

[Macca]

Thanks and sorry for posting, I`ve seen these types on Amazon frequently but not ebay and should have examined it more closely.

[calvin83]

I don't think it is a fake listing. The link just need to be fixed.

Click here to see on Ebay

[kds315*]

[stevemark]

RE Zoom Auto Topcor 4.7/87-205mm (1307610)
RE Auto Topcor 2.8/100mm (7506620)
RE Macro Auto Topcor 3.5/58mm (13700743)
Macro Topcor 3.5/30mm (1240740)

Greez, Stephan

[calvin83]

There are four 85/1.8 currently available on eBay. Two of them have consecutive SN: 327 & 328.

Click here to see on Ebay
Click here to see on Ebay

[weihsuan]

Hi, I'm relatively new here. Chanced upon this thread when researching my newly purchased Topcon set which comes with a 58mm 1.4.

I believe the lens belongs to the classification below, serial 11251197.

V2
RE AUTO TOPCOR 1:1,4 f=58mm TOKYO KOGAKU 1125xxxx
Black

Hope to gather more information about this V2, and about the lens. Looking for the hood and front cap too.

Cheers

[Bubbleboy2]

My old login was expired, So joined again.
I know I can't post pix yet...

I've gotten some new 300mm Topcon lenses:

R. Topcor 1:2.8 f=300mm Tokyo Kogaku Japan No.341445
R. Topcor 1:2.8 f=300mm Tokyo Kogaku Japan No.341588
RE AUTO TOPCOR 1:5.6 F = 300mm TOKYO KOGAKU 15500086
R.Topcor 1:5.6 f=30cm Tokyo Kogaku Japan 701239

Others:

Macro -Topcor 3.5/30mm Tokyo Kogaku Japan (second line) 1240399
RE ZOOM TOPCOR 1:4.7 f=87~205mm TOKYO KOGAKU 1305537
RE.AUTO-TOPCOR 1:1,4 F=5.8cm Tokyo Kogaku Japan 1128611
RE GN TOPCOR M 1:1.4 f=50mm TOKYO KOGAKU LENS MADE IN JAPAN (on side 15700190)

R. Topcor 1:2 f=13.5cm Tokyo Kogaku Japan No.318298

Thanks,

Rory Blake

[Himself]

I acquired recently a Tokyo Kogaku Topcor.
On the ring it says: RE Macro Auto Topcor 58mm/3.5
S/N: 13706173
Black version.
Missing the rubber ring but otherwise the glass looks pristine.

[Lightshow]

Congrats, it's a nice lens, I'm also looking for the black 58/3.5 Macro and the black 58/1.8(with chrome filter ring), I'd love to find a black 25, but I doubt I'll ever find one.

[Lightshow]

[stevemark]

[Lightshow]

Yes, congrats, please post some pics from the 135/2, I don't think there are any samples on the forum yet.
I've been curious about it for a long while, since i got it's little brother, the R 135/3.5, I've since picked up the R 90/3.5, 200/4, & 300/5.6
There were possible prototypes of a 28/2.8 and 50/2.8 which I really wish they made.

[Lightshow]

[stevemark]

[Lightshow]

Glad to be of help.
I'll add a few more details for you, after removing the mount and aperture ring, I removed the rubber(if yours is original, check how soft it is), unscrewed the stop screw through the hole in the focus ring(I'm not sure I needed to do this, I assumed I did), set the lens to MFD, unscrewed the rails, then removed the rear helicoid, and added a witness mark in the area under the rubber in line with the center of the DOF scale where the helicoid separates, I did the same with the front helicod, there is a little pointer in the aperture mechanism that aligned with the same witness mark.

I didn't have a thin long screwdriver to separate the focus scale from the middle helicoid, so I didn't have clear access to the threads, so cleaning those threads were a bit of a challenge, I think it was a small flat blade ~1.2mm and the thin shaft needs to be ~1.5"/3cm long, mine are about 2cm long and couldn't reach the screws.

I also had a click/partial obstruction halfway in the focus travel, turns out the aperture bar/rail that attaches to the aperture ring needed to be bent out slightly near the end.

I just noticed my Auto aperture lever is missing a rail off the mount, someone removed it.... grrr
Could you photograph the backside of the mount showing the rail so I can make a replacement, thanks.

[Ernst Dinkla]