Yes these victas are collectables. I have several in my own garage. The ammount the mower is worth depends on many things:
1. The overall condition (eg paint condition)
2. Victa badge/name plate (mounted between handlebars)
3. the sparkplug tool that came with some models mounted between the handles
4. the actual model
These lawnmowers are beasts and your neighbours will just lurvvvvvvvve the noise they make when revved. if this is not loud enough then unbolt the muffler!