Grats on your 99K. One of the first CL purchases I made is a Pfaff 230 ($25 if I remember correctly...lol Neither of us realized what a great machine it is) together with a Morse 200 (another $25). When she arrived to meet me at the agreed-upon spot, she lifted a 99K in a bentwood and said she was throwing it in for free. Mine is a future project.
Those who use them seem to really like them. My favorite 99s are the '50s style with the lever and reverse feed but the earlier ones are very nice.