* There were no VHS tapes in 1968. The VHS format was introduced in 1976. The original Star Trek series aired from 1966 to 1969, so any "VHS tape" would be a later release.
* Rarity and Condition: The value of any old videotape depends on its rarity, condition, and the specific episodes it contains.
* Demand: The popularity of Star Trek has remained high, so demand for old tapes can fluctuate.
To get an idea of the value, consider these steps:
1. Identify the exact tape: Look for the specific title and any details about the episodes included.
2. Check online marketplaces: Search for similar tapes on sites like eBay, Amazon, and specialized collectors' forums. This will give you an idea of current selling prices.
3. Consider condition: A tape in pristine condition, with its original case and packaging, will be worth more than a damaged or worn one.
Keep in mind: Even a very rare tape from a popular series may not be worth a lot of money. Many old VHS tapes are simply considered collectibles.
I hope this helps!