This information is from AUTOMATIC MAGAZINE (the publication of NAPCA), the National Automatic Pistol Collectors` Association.
Photos show a warehouse stacked high with wooden crates. Several crates are opened showing Lugers, P. 38s 98k rifles, etc.
This is a very long web address:
http://www.guns.com/news/2019/01/29/...era-guns-video
Think about joining NAPCA!