{"product_id":"extra-nice-extra-packed-wwi-us-navy-merchant-marines-double-sided-mechanical-signal-chart","title":"Extra Nice, Extra Packed WWI US Navy \u0026 Merchant Marines Double Sided Mechanical Signal Chart","description":"\u003cp\u003eI've found just a few \"signal disks\" of this sort over the years and think they're such excellent things I'll always scoop them up--and this is an especially great example, dating to WWI and jam packed with information. On one side a variety of signal\/code flags and pennants and what they signify, with three windows for running through them on rotating disks and testing oneself as to their meanings. On the reverse, a guide to two arm semaphore positions with two windows, and storm and weather signals below. Should AI take down the internet, seems this all might come in handy, and just a beautifully designed, graphically satisfying thing in all regards.\u003c\/p\u003e\n\u003cp\u003e6 3\/8\" x 3 3\/8\", very good condition.  \u003c\/p\u003e","brand":"critical EYE Finds","offers":[{"title":"Default Title","offer_id":49010710348030,"sku":null,"price":65.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0015\/5022\/1382\/files\/IMG_6673copy_b14c20aa-d51c-42a4-82bb-22ba2afd55ee.png?v=1789655894","url":"https:\/\/www.criticaleyefinds.com\/products\/extra-nice-extra-packed-wwi-us-navy-merchant-marines-double-sided-mechanical-signal-chart","provider":"critical EYE Finds","version":"1.0","type":"link"}