Tonearm needed for Technics SP 15

I picked up a working Technics SP 15 turntable from a radio station without a tonearm. I'm having a hard time finding one. I have the plinth it was mounted on with a hole for the arm. Any ideas out there? I don't want to spend a lot of money, but something decent. Is this table worthy of a MC cartridge? Not looking to really use the 78 RPM mode.
Dear Twilightzone: These ones can work fine and yes IMHO you can mount a MC or MM ; no trouble:

Regards and enjoy the music,
I also own the SP-15, and all of Raul's suggestions would be great with your table. However, if you have a plinth with a permanent tonearm mounting hole (no removable armboard) then you'll need to make sure the arm you buy is compatible with the spindle-to-pivot distance of the hole in your plinth. Measure it, then go to the tonearm database either here:

or here:

and you can search for tonearms that match the mounting distance you need.

If your plinth has a removable armboard, such as the Technics SH15-B2/3, then you can fit most any 9-10.5" tonearm, but you'll need to get and armboard and drill it to fit.

With a decent arm, the SP-15 is worthy of lots of good cartridges, both MC and MM.