I have a Fender Squier Stratocastor with serial number M008849 on the headstock and JV69399 bolt neck plate. Any idea of when this was made roughly what it would be worth?

The serial number M008849 indicates that your Stratocaster was made in the FujiGen Gakki factory in Japan. The first letter "M" denotes the factory, the following two digits "00" indicate the year 1980, and the last five digits "8849" are the sequential production number.

JV Serial Number JV69399

This serial number indicates that the neck plate was made in Japan. The "JV" prefix was mainly used on Fender Japan instruments manufactured between 1982-1984, and the "69399" is the serial number.

Value of the Stratocaster

The value of your Squier Stratocaster depends on several factors, including its condition, provenance, and the current market for vintage guitars and collectibles. Given the information provided, it is estimated to be worth between $400 to $600 USD in good condition, based on recent market trends and comparable sales of similar models.

It's important to note that the actual value may vary and can be affected by various factors such as the presence of original parts, modifications, overall wear and tear, location, and the specific interests and preferences of potential buyers. For a more accurate assessment, it's advisable to consult with reputable sources such as vintage guitar experts or professional appraisers.