What shutter does it have, Voightlander used both prontor and compur shutters, and also a pronto shutter, The prontor has the V M X lever, the Compur shutters the Rapid was synced for x and the syncro compur has a a switch, normally green, which switched from m to x, and the pronto has only 4 speeds plus b,compur would have an independent self timer, which I would suggest you do not use as with the age of the shutter the self timer can jam the shutter needing an expensive repair. another difference between the compur and prontor shutters is that both the rapid compur and the syncro compur have a top speed of 500 and only one prontor shutter,the slk, has the 500, all others have only 300. Looking at my own vitomatic IIa it has the prontor slk shutter and the vxm lever, also vitomatic's, and also the vitos do not have strap lugs, my vitomatic and vito b has two sort of catches for the strap, useless, however, if you have the color skopar lens, you have a great usable camera capable of producing great results.
I hope the above helps