put a spool of thread on one of those wire brackets to find out if it holds a spool. then post another photo
the hooks on the left are designed for popper flies
not really on the "meat whistle" comparison
Calcasieu Pig Boat most probably out dates the meat whistle and probably the 2 you posted in your original posting
they look pretty damn similar to the Calcasieu Pig Boat most
https://www.flyanglersonline.com/flytying/fotw2/022006fotw.php
Calcasieu Pig Boat
Hook - Bass style
Thread - Black
Hackle - Your favorite color
Body - Chenille in your favorite color
Legs - 56 strands of rubber legs (original recipe?)
Head - Built up thread
UV Resin
Reference
http://www.warmwaterflytyer.com/corner.asp?page=2