I just want to submit a suggestion to guys who swap out a movement in their Bulovas because it's cheaper than repairing the original. If it's the same model movement and jewel count, but a different year, swap out the barrel bridge on the two movements. Then your replacement movement will still have the date code as the original. It's just a 30 minute job and in my opinion it helps retain the originality of the watch and it sure won't hurt the value. What do you think?
I like this idea too. If/when servicing, these bridges are removed anyway, so place the bridge w/ original date and info into the serviced replacement/spare movement. Who cares and what difference does it make if the drive train from a 1927 17 jewel 10AN is from a 1929 10AN anyway. This helps preserve the info of the watch as the owner originally received it.