Ralph,
I offer this routine for your consideration.
On your SCF open page, open a new tab at top called "stamps"
Here you can save links to all sorts of things for stamping.
At the top of mine (3rd top) is "Translate"
save the link to Google translate.
Done
Now simply type in "Timbre Para Facturas" and Google will do the rest
Here is the result, country detected and translation
