This one is very rare! Seems like it is from early time of BM. Excellent condition! I am second owner. The original owner said the cartridge was retipped. I almost didn't use it. Now it sounds great. It seems like medium output cartridge. Some letters worn on left side. Serious buy or offer only please! Shipping is $10 CONUS and $26 worldwide. Prefer money order but will accept Paypal if you pay Paypal fee 3% domestic, 4% international. Thanks!