fender bv 9151 uj

hey there I was looking for a cheap P bass on ebay to put a fretless neck on and stumbled upon this... Ebay title says „Fender Precision Bass BV 9151 UJ“. This is also written on the headstock. What is BV 9151 UJ? Never heard before and I couldn‘t find any info. Googling leads to the ebay ad...