Good morning ahsposo,
I have two Dynamics and have been searching for the same tool for months. In my opinion they are extinct!! I think Frigidaire in the 1970's collected them all up and melted them down to make this lovely couple.
http://retrorenovation.com/2012/09/...r-original-colors-from-frigidaire-circa-1975/
I have found the perfect solution. I took a leap of faith and purchased on Ebay a Bulova Accutron Wrist Watch Tool
"Accutron 228" and it fits like a glove. I agree you can use an adjustable case back tool but most are metal and can scratch the case back and strap retaining ring. There is still one available so i would move quickly on Ebay if i were you. Use search term....
Bulova Accutron CASE OPENER Wrench 33 mm - Plastic Ring - 228 No Harm CasesPurchases made through these links may earn this site a commission from the eBay Partner Network
Its' $19.00. A good deal!! Best of luck. Pictures of mine below. It came with a smaller one,no number on it, that i will probably sell, unless I discover it fits a ladies dynamic...
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