Kodak Brownie Hawkeye Flash Camera and Flash Bulbs
Includes 1 (box of 5) Rex-Ray No. 5 Flash Bulbs
Made for 620 medium format film, which is no longer commercially available. Can be used with 120 film if you modify the spool.
You can buy the 620 film from B&H Photo in NYC: www.bhphotovideo.com/c/search?Ntt=620+film&N=0&InitialSearch=yes&sts=ma&Top+Nav-Search=