Switch type used on '71 Superbass

[AndyD]

I am helping a friend out with a '71 Superbass (of which I have a share in it). It came to us with a Arrow Black bat mains switch and an obviously non original metal toggle switch for the standby. Finding a single black bat switch is proving very difficult so I wondered if this era of amp would also have had a pair of metal toggle switches which may be easier to source? If so what make and type would Marshall have used? I'm sure this is right up @TAZIN and @neikeel street! Any clarification would be gratefully received.

 

[TAZIN]

The Arrow switch with the small black paddle seems to be the most popular for '71. I do see some Arrow switches with the chrome bat also in '71.

 

[neikeel]

I’ve got one spare.

 

[AndyD]

That’s brilliant, thank you.

 

[Trouble Free]

I have a 72 that came with the chrome bat switches, one was replaced with a bigger switch.
Does anyone know of a part number for these? I tried searching not having much luck.