This is a J Hudson and Co of Birmingham, England
military trench whistle with leather lanyard
made in 1914 with a value of $70.
Here are some helpful suggestions for selling online; Mercari.com, Wanelo.com, decluttr.com, Bonanza.com, Etsy.com, eBay, Pamono.com, and Chairish.com.
I will also list the most popular local online classifieds where the buyer picks up from you; Varagesale.com (local), and letgo.com (local), 5miles.com (local).Your local Facebook Marketplace online is a good place to sell locally without having to ship.
To have someone else do the work for you, you can go to invaluable.com, liveauctioneers.com, or auctionzip.com and search their directory for an
auction house near you and consign to them.
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(you have posted in law instead of appraisals, and I had to havve it moved over)