Hi Donald,
The Mark I looks like a used but honest example without too much wear. Nice to see undamaged grips. I'd hazard a value of approx £100 for the pistol.
The Premier box is a few years later than the pistol and would have been made after the Mark I had been discontinued. There is some wear apparent and there is a similar box on the bay at the moment, so you may want to keep an eye on it to gauge a value.
Hope that helps.
Kind regards,
John