Many good service cards? (4)

I believe the answer is:

aces

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This clue might be a double definition.

'many good service' is the first definition.
'aces' can be an answer for 'service' (I have seen 'excellent service' mean 'aces' so perhaps 'service' could also mean 'aces'). I'm not certain of the 'many good' bit.

'cards?' is the second definition.
(ace is a kind of card)

Can you help me to learn more?

(Other definitions for aces that I've seen before include "passes with flying colours in US" , "holes in one" , "winning points" , "Expert fliers" , "Tennis serves the receiver can't reach" .)

I've seen this clue in the Sydney Morning Herald.

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