Collins 51S-1 SW Receiver

[nodim2]

I'm new to this portion of the forum, but I was recently given a Collins 51-S1 Shortwave receiver. It appears to be in excellent condition, bu I have no idea how long it has been since it was powered up. Other than bringing it up with a Variac or similar method, are there any things I need to be particularly aware of? I'm sure it will require checkout/alignment/possible parts updating. Is there anyone you can recommend for this process, including any restoration steps? Thanks in advance for your help.

Harry