40th Anniversary Logo for The Center for Sales Strategy

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This customer received 8 logo designs from 4 designers. They chose this logo design from Jerwin Intac as the winning design.
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A 40th Anniversary logo that uses our main logo and incorporates the '40' into it. Likely using the blue prism circle into the '0' of the 40 - if it works. It needs to keep the same blue prism and the same 'The Center for Sales Strategy' text. Just adding the 40 into it somehow.
It should be similar and recognizable, but celebrate the 40 years and emphasize the anniversary.
Just '40' could be worked into the current logo, OR '40 Years'
Also 'Improving Sales Performance' tagline could be used somehow if it works, but not necessary.
Attached are current logos as well as the prism circle.
Logo Text
40 | The Center for Sales Strategy