BSR 41⁄2" auto stacking spindle as found fitted to numerous BSR record player decks, see list below.
The best way to see if this is the correct one for you is to remove your old spindle and check the overall height (tip to tip, including actuator), as well as comparing it to the pictures.
BSR part no. A107043, A104842
41⁄2" overall height.
This is a used part, it is in good condition and full working order.
Fits the following plus others: A13, A14, A21, A22, A29, A34, A44, AA47, AA55/65, C109, C110, C116, C123 Series, C129 Series, C130, C141 Series, C142 Series, C154E1, MA56, UA47, UA56, UA70, UA75, UC3882/534, 300, 310, 310/X, 400, 500, 510 Series, 600, 610 Series, 2620, 4620W, 4700, 4800 Series, 5500 Series & 6500/X