any information about this 1917/20 unit marked erfurt would be appreciated

[sheepherder]

Originally Posted by Ron Wood

The Flicker gallery is not accessible without a password/sign in.

Ron is subtly suggesting that you attach pics directly to your thread. The forum members with the most to contribute to your knowledge base are behind corporate/government/military firewalls which block outside social photo-storage sites such as PhotoBucket, Flickr, SmugMug, Google, etc. IOW, they can't see your pics. Their employers pay for their Internet access and in most cases their PC/laptop, so it is not convenient for them to change ISPs.

Furthermore, linking outside sources means that this forum does not have your pics in local storage. They are not accessible in the future if your outside site changes format , location, or goes down (for whatever reason).

We hope you understand. Attaching pics here is not a difficult undertaking.