Identifying Transducer

Hi,

I have an older center console equipped with a DFF 1 fish finder and 2 MFD 12s but unsure what transducer I have. The sales slip just says BTTH transducer installed.
I do have Accufish that shows the blue fishes. Does this help in identifying the model of transducer ? Thank you for any help. I'm thinking about getting a new transducer at the end of the year as it's 14 years old
 
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