Greetings
When the head is pictured upside down it's really guesswork, but I think those blades might be the early type without the word Valet cut out of the blade. If they belong with the razor then it would tend to suggest it is one of the earlier models that will take a modified GEM Blade as well as a Feather
I have learnt to ignore the handle as it would seem (as is the case with other makes of SE's) all sorts of handles were used on many different models at the factories. It would appear they would use up a style of handle left over from previous models and also there may have been an interchange of parts between the three factories ie USA UK and Canada.
Regards
Dick.