I have been doing an archaeological excavation of my 100 year old parts barn  , and found this Austin Healey ribbed brake drum, number 1B7526, NOT  1B4570. It fits 100-6 with wire wheels,  and is not reproduced. I do not know if it fits front or rear.   The Moss Motors number listed may not be correct. The inside is rusted (I have treated the drum with anti rust compound, painted the outside hammered silver Rustoleum, lightly painted the inside white, to better show condition in photos., that would need to be machined.. This ad is for ONE, shown in these photos. I have an incredible inventory of English parts..Please  go to my eBay store, then click on the  the  section you want. .I have many thousands of original British parts, all marques;  1950-1994, in my Time-warp  warehouse, and over a thousand on my eBay store, Old English Motor Company. Those are organized into 20 categories.  .. If you do not see what you want; contact me, I will post photos in the store for you.    Please inquire 1954JAGUARS ,  or 1 954 JAGPART. Shipping in the US is FedEx . Please give me your phone number for the box. Outside the US; Shipping is by Priority Mail...     .Thank you, James Dean, thejaguru.  NOTE, I am now located in SEBRING, the Heart of Old FLORIDA