File under "you never know when you might need it...". Whether for a coronation outfit or for your teen's prom.
Keep your eyes peeled always at thrift stores for black 'ties so you are not caught out. This vintagey example made by AKCO in England and worn (I believe...) as part of the legal wear for A. Laurie and Co. solicitors in Edinburgh (Scotland). I did get this in an Edinburgh thrifty so makes sense...