Hey Andy,
I saw in the thread's pix that the blank label has square corners, but my original sticker is rounded in the same way as the silver line border edge with round corners - but just a few mm's out. Maybe you could use the semi-circle punches for the anti-tamper cuts to do each corner to get it exactly as original with rounded corners?
It looks like the early silver ones were rounded corners too, from the pix of original VIN labels in this post.
Here is mine & a pic of the repro one which you posted above for comparison, so you can see what I mean.
My original VIN sticker in black
over the original L80E (COA & physical evidence on car verifies Light Ivory), &
under the 3 repaints (Sahara Beige or tinted primer pre-11/75 both by PO/OO or dealer, Gold met. pre-11/75, L99K Copper met. 8/76 by me, & dark grey/Anthracite met. 5/80 by me) - which were carefully lifted off the sticker with acetone & Q-tips/sof cloths last year....
VS.....
.
Also, can you please post the link to the buy thread here?
I searched in Member Vendors, Parts FS & Garage, but can't find it - even though I recall seeing it before with your link to get to the PDF form online.