Is there a serial number or other identifying markings anywhere on the guitar?
Do you have photographs of the guitar, such as the headstock, body, and any notable features?
Additional information about the manufacturer, model, or any historical context you may have about the guitar would also be helpful in providing a better estimate.
If you have this information handy, please provide it, and I'll do my best to offer some insights about the estimated date of manufacture and historical context of your guitar.