6th STUD 1989-1991 USPCC
The last white border STUD.
From the 6th STUD, the USPCC will once again manufacture the product.
The major feature of the 6th STUD is the change in the manufacturing method of the deck and Tuck Case.
"tuck case"
1,Semi-short flap and
2,Short flap.
"Card Finish Roller"
1,Cotton roller until 1991
2,Steal Roller from 1992
The USPCC deck at this time was a transition period from the old vertical Tuck Case to the new horizontal Tuck Case.
These can be distinguished from the appearance.
USPCC case flap type
1,Long flap before 1990,
2, Semi-short flap as a prototype only around 1990,
3,Short flap since 1991 to the present,
There are 3 types of (see image)
For the 6th STUD, the face design is now the ARRCO design.
This is because the USPCC has obtained the copyright to the ARRCO design and is now free to use it.
A semi-short flap has no "claw" to hold the lid in place. In other words, when the lid is closed, it looks like a long flap, but when the lid is opened, it turns out to be a short flap.
Around 1990, the USPCC was undergoing a period of major change, and many decks, regardless of STUDs, had irregularities.
I think the existence of this 6th Edition is a factor that complicates the understanding of STUD variations.