Threads are M11 size @ 10.8mm. Removed yours once too often, been a bit heavy handed with the screw driver?.
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( PA200IM52). La Pavoni UPGRADE . Part no. 81 from attached diagram. Made in Italy.
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For use with new group, millenium, Pavoni Lever machines manufactured from the year 2000 onwards. Pulling Great Shots on La Pavoni Lever Espresso Machine. For Millennium models (NEW Group). Create Widget or customize colors.
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Stainless Steel Flat Base 49mm. Black Solid Wood Handle.
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(Kit includes 19 following gaskets 2 Boiler to Base Gaskets;. 1 Pre-Millennium Group Seal;. 1 Steam Tap Rod Seal;. 1 Piston Rod Silicone Lip Seal;. 80s models) or more a thin rubberised 'O' ring seal (newer style).
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eBay
In working condition. Missing piece that presses coffee down. From 1970’s. Last picture shows finished product. Cup not included.
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eBay