Jeff it is a 74033 B for blue, please have a look at the page 23 of the 74 with the blue carrera 110 573 on front page, watch looks ok to me except strap will ask seller for lug numbers, box is a match to a non auto watch.
If I may allow one comment: on the picture gallery you show a blue monaco 73 633 B which I believe is a post heuer put together, please look at smaler hands just ref no but no serial number, you find these quite often in europe sold in uk but origin seems to be in germany (munich fair)..Br AMH