Bulova 1974 Senator

1974 Bulova Senator 'F'  Model 11001

Case is stainless steel with a 10K yellow gold bezel ring, dated N4, case# T-3081 (Taiwan); 23-jewel automatic movement with day and date (quick-set); dial color according to the ad is taupe grey with gilt accents; original link bracelet with Bulova signed clasp; original boxes with tag for model 11001 W/Y.

1972 Ad for 11001-5W/Y (Senator-F). I'm wondering if the -5 calls for a specific band; as this band has smooth gold color connecting pieces, where the ads show a different style, as does this 1972 example. Could just be a style change being two years after the ad, or a change to an Asian market source since the watch's Kreisler band is from Hong Kong and case is Taiwan.