I spoke too soon. I took a couple of test shots that seemed to work OK, but now (no matter what the lighting conditions or f-stop setting) the Yashica shows the "slow" lamp glowing and the shutter release behaves as if it was set at "B" Ugh. Oh well. Worse things happen at sea! I might still be able to repair it...maybe. I emailed the "Yashica-Guy" for advice, he sadly tells me I probably have a camera-shaped doorstop. Now I am really wishing my brother hadn't chucked Dad's camera. It might have been handy for spare parts! Siblings!
Saint - glad I could help generate some happy nostalgia for you!