The saddle end of the tailpiece should be more or less 4/6mm from the saddle at the ridge. So the tailpiece must not be allowed to slide up the violin and move nearer the bridge. By re-tuning you are actually letting the tail piece creep up.
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4/4 Cello Plate Mahogany Fibre Stretching Plate One-piece Structure Tailpiece Cello Parts Stringed Instruments Accessories
Aliexpress UK
Traditional design Hill pattern Cello Tailpiece in high quality Rosewood or Ebony. Cello 4/4 Tailpiece - Hill Pattern - Various Options. Rosewood with White Saddle. Rosewood with Gilt (Brass) Saddle. Ebony with Gilt (Brass) Saddle.
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The saddle end of the tailpiece should be more or less 2/3mm from the saddle at the ridge. So the tailpiece must not be allowed to slide up the violin and move nearer the bridge. By re-tuning you are actually letting the tail piece creep up.
eBay
CELLO TAILPIECE. MODEL- HARP SEMI HILL. BUILT IN LIGHT TUNERS.
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The saddle end of the tailpiece should be more or less 2/3mm from the saddle at the ridge. So the tailpiece must not be allowed to slide up the violin and move nearer the bridge. By re-tuning you are actually letting the tail piece creep up.
eBay
Wittner Viola Light Alloy Tailpiece with Four String Adjusters and Adjustable Nylon Tail Loop for 1/4 and 1/8 size Cellos. Includes Adjustable Nylon Tail Loop. Finish - Black Satin. Weight with String Adjusters 60 grams.
eBay
The product is a 1/8 size cello tailpiece fine tuner and tailpiece gut specifically crafted for cellos. Made in India, this tailpiece is essential for maintaining the tension and stability of the cello strings while offering fine tuning capabilities. Designated for use with cellos, this high-quality tailpiece gut is a must-have accessory for musicians looking to enhance their instrument's performance and sound.
eBay
Here I have for sale aCello Tailpiece 4/4.
eBay