One of website visitors asked for advice on these whistles found in the Pacific:

"I am trying to find out information on these whistles that were found on a deep sea dive. I have found American NPO whistles, but have not seen anything with this writing on it. Any information would be greatly appreciated!

They were found in the pacific ocean near Midway island. We think they might be from the midway attack, but speaking with a marine biologist on the island, she said the attack was from the air, and there was no ground battle. However, I found that these whistles were also used on navy boats to alarm of an attack."

After speaking to our whistle contacts in the UK we received the following information:
"The whistle with the deer on it appears on page 108 of the Whistle collecting book. Then, as now, all we know is that it was made in Hong Kong. The Whistle with the Scout Trefoil was made for South America probably by the Wahing & Co Superior Copper Manufacture Canton. We cannot be 100% certain nor are we sure of the date of making . It is Chinese."
 
After speaking to our whistle contacts in China we received the following information:
This is traditional Chinese characters. The 1 area's texts mean are : 中國泉珍廠 ，that is a Chinese factory's name which is: "China Quanzhen Factory". The 2 area's texts mean are: 註冊商標 ,this mean is : "registered trademark". We can still find it [the whistles], in our country's website , this whistle is eighty years old if it is real . Price is 30 dollars in our country .