85 Japanesse GT Pro Performer Serial Number Question 
#1 2012-11-20 8:57pm
- hd469@aol.com
- For Sale Restricted
- Registered: 2008-12-16
- Posts: 137
- Feedback: 3403
85 Japanesse GT Pro Performer Serial Number Question
I have a chrome 85 GT Pro Performer made in Japan serial number starting 5X07 and ending with a baseball stamp on the rear drop out and i know that its a July built 85 but what i want to know is if the remanding numbers mean production count?
Last edited by hd469@aol.com (2012-11-20 9:01pm)
Offline
#2 2012-11-20 9:05pm
- Kid718
- Pro MemberBill Effin' Murray
- From: Brooklyn, NY
- Registered: 2009-11-16
- Posts: 6849
- For Sale
- Feedback: 45200
Re: 85 Japanesse GT Pro Performer Serial Number Question
Here's my Japanese made, 85 PP serial...on the BB;
Everything I own is for sale. Pm any interest.
"The wolf does not lose sleep over the opinions of sheep."
"I'm intrigued. Although, that could just be the intriguenol I took this morning."
Online
#3 2012-11-21 12:01am
- sparky
- Pro MemberOS-DB Expert
- From: England
- Registered: 2006-11-12
- Posts: 772
- Bikes: 4
- For Sale
- Feedback: 1100
- Website
Re: 85 Japanesse GT Pro Performer Serial Number Question
X refers to September, here's a breakdown of the Koizumi serial format http://www.os-db.net/content.php?227-Ko … l-overview
Offline
#4 2012-11-21 8:49am
- SARON81
- Pro Member
- From: Edgewood, MD
- Registered: 2009-10-13
- Posts: 1110
- Bikes: 1
- For Sale
- Feedback: 4500
Re: 85 Japanesse GT Pro Performer Serial Number Question
Yes, the numbers after the date code would be the production sequence... but remember they were building frames at different factories, so even if you have xxxx0001 it might not be the first production model.
Last edited by SARON81 (2012-11-21 9:32am)
Offline
#5 2012-11-21 12:13pm
- sparky
- Pro MemberOS-DB Expert
- From: England
- Registered: 2006-11-12
- Posts: 772
- Bikes: 4
- For Sale
- Feedback: 1100
- Website
Re: 85 Japanesse GT Pro Performer Serial Number Question
SARON81 wrote:
Yes, the numbers after the date code would be the production sequence... but remember they were building frames at different factories, so even if you have xxxx0001 it might not be the first production model.
Fabrication of BMX which started in 1979 at Koizumi, all came from a single factory regardless of Brand. Some items such as Forks (later in 1983) were outsourced to Tange and Hokuyo kogyo though it is understand there were streams of number sequences allocated to a specific Brand, although there have been indications that was not always the case. 
Offline