I have found a few sterling silver objects which various auction companies believe are genuine Tiffany objects made in Portugal...
I did have a Tiffany pill box stamped "Made In Germany" which also had a slightly crude hallmark such as this example, which is why initially I thought there was a chance this could be genuine.
Also, I have a similar pill box, constructed of three conjoined circles, so perhaps the form is a traditional Portuguese Pill Box form, my example has full hallmarks for Portugal, and they are among the smallest hallmarks I have ever seen....