Ask for a front view, a crown-and-bezel close-up, and a bracelet image that shows the links relaxed rather than held rigid. Inspect dial centering, Roman-numeral printing, cabochon seating, the position of all eight bezel screws, and the consistency of the two-tone bracelet. The larger case gives every alignment point more visibility, so small inconsistencies show sooner than they do on the compact model.
Use a wrist image to judge the 27mm x 37mm proportion against your preference for the smaller Panthere. The case should read clearly while the bracelet remains supple, with no abrupt visual break where the links leave the case. That relationship is what makes this medium reference a distinct choice rather than merely a larger version number.
There is also a practical visual difference between the two sizes. On W2PN0007, the broader dial opening makes the black Roman numerals and blue cabochon easier to notice from a normal viewing distance. That is useful for someone who likes the Panthere design but finds a smaller jewelry-watch format too retiring for regular wear.