Quoted TextCan someone confirm the turret on this Sherman for me? I believe it is a D50878 "recycled" turret, but there are no visor openings in the commander's cupola. Any help would be greatly appreciated. The link is to Don Allen's (8Hussar) Photobucket to give him proper credit for the photo. https://www.tapatalk.com/groups/hyperscale/imageproxy.php?url=https://i661.photobucket.com/albums/uu336/8Hussar/Allied%20-%20US%20Tanks/M4A1%20POA-CWS-H5%20Flamethrower/M4A1POA-CWS-H5.jpg
It's a rebuilt M4A1 that appears to have had a piece of galvanized pipe welded in place over the gunner's sight to make it resemble the POA-CWS-H5 flamethrower tanks designed in Hawaii by the Chemical Warfare Section near the end of WW2 for the USMC. These conversions were done on M4A3 howitzer tanks, not dry-stowage M4A1's, and eventually saw action with the US Marines in Korea. So, unless it's some forgotten prototype preserved in Hawaii, I would assume that this display is just a piece of piostwar "imagineering."
If you look at the link that I provided, you'll see that it is a "mock up".