Hp67 and others, Drill or not to drill?

[Helix]

Another solution is to order a replacement back plate, made by a French guy:
https://www.ebay.com/itm/225771932494?ha...Swsl5kXM5G
Or just search for "metallic back label for HP 67".
I’ve ordered one on these. The printing quality is not on par with the HP plate, and the whole look is different from the original, so in case of a well preserved plate it’s probably not a good idea to change it.
But in case of a damaged plate, which is very common, there is no doubt that this replacement plate looks much better.