Hi Antique Bottle Collectors,
I know where I can purchase a bottle just like this one. The seller wants $500. If anyone is interested I can contact the seller and take detailed pictures of the actual bottle.
I know beer stuff can fetch a premium, but that is only if they are in great shape. That label is badly stained and faded. I doubt it would sell for more than $50-100, even if it is a highly sought after one-of-a-kind beer.
I believe the Fredericksburg Beer brewery was in San Francisco. As best I can tell they used embossed bottles and these labeled bottles came from outlying bottlers / distributors like Klamath Falls Agency or Pacific Brewing & Malting Co. I'd have to examine the subject specimen closer to determine (if possible) exactly which label it has or where it came from. The owner seemed a bit touchy about it so unless someone is seriously interested I'd just soon leave it alone.