Hi ccool,
The 2452 was on cream colored paper, the 2452B was on white paper. There is a 2452D that has the date 1995 on it too.
Here is a link to a page with some info. At the bottom of that page you can click to be taken to a page that has a photo of all 3 to compare.
http://www.pnc3.org/Data/Circus-abnc.htmDave N.
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