For your eBay consideration today here's a vintage UMCO double sided fly fishing tackle box, made in Watertown, Minnesota USA for $20 cash FOB Pomeroy WA.
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Some soiling, a few small dings/dents noted from a lifetime of use. Ready to go back to work, or could be cleaned, straightened, and detailed, if that's the way you roll.
Shower curtain type clip on one end.
Insert plastic trays are in good shape.
Lids and catches function well, as designed.
Fond memories as my mother had one of these for her fishing tackle.
Undoubtedly you've seen versions that have been modded for fly fishing by simply removing the plastic inserts, and installing open cell foam, or cork board, or other suitable agent for securing favorite flys.
Clearing off the spares and duplicates shelf, so this UMCO tackle box can go on to a better home.
I do wander over to the L/C area from time to time and could bring it along if that helps.
Thanks for looking!