With that serial number, this could be an early curved needle machine, a #8 or a #9, but not a D-9. It really won't make that much difference though as to getting the needle out. Likely that old needle has been ih the machine a long time & is well stuck, possibly even some rust. I would first entirely remove the entire clamp screw & squirt it with your favorite penetrating oil. You want to be very careful & not break the needle off flush with the needlebar leaving nothing to grasp. If you have or can get a small brass or copper rod you might tap on the shank portion lightly to set up a bit of vibration which will help the penetrant do its job. Do this for 2-3 days. Then use something you can grip the exposed shank with & twist, without exerting sideways pressure. Once that needle moves a bit, it will break the bond & should come right out.? Just go slow & careful & TRY Hard Not to break that needle flush. The blade itself is not of much importance but you need the exposed portion of the shank to work with.
