1960, reflectorized beads

There was a lesser-known reflectorized test batch that happened in the early 60's; this plate is from that batch. As far as I know, only trailer plates were made this way.

1970, reflectorized

This one is reflectorized by the other more common test method: Scotchlite.

c. 1970's sample

This one is not reflectorized at all.

1971

At this point the letter O was still safe to use in standard-issue plates.

March 1975

The TA-100A series started in 1972.

March 1985

Formatting was changed with the introduction of the blue base, this time to 100-TAA.

March 1989

Just another nice trailer plate from this series.

March 1990

March 1992

1992 sample, first-generation 3M sheeting

This numbering format was never used - interesting that samples were made this way.

March 1994/1995, first-generation 3M sheeting

TAA0000 was the first format for graphic trailer plates.

March 1996, first-generation 3M sheeting

After the 7-character plates were vetoed, T000-AA was the format of choice. This one is pretty close to the end.

March 1996, first-generation 3M sheeting

Another new format in 1996: T1A-000.

1999 sample, first-generation 3M sheeting

...then T00-A00 begain. This one lasted a while.

March 2003, Avery sheeting

Further down the line of the T00-A00 series.

2004 sample, second-generation 3M sheeting

This sample doesn't make a whole lot of sense given that the TAA000 series ended over 10 years ago, and it never got close to TWR either.

March 2005, second-generation 3M sheeting

New series in 2004: TAA-10A.

March 2007, second-generation 3M sheeting