Switzerland Scott #232

The Lighthouse album for Switzerland includes Types I and II for the 1936 20c St. Gotthard Railroad stamp -- for both smooth and grilled gum (Scott #232). The album does contain images, but I appear too obtuse to differentiate them. The Scott catalogue does not detail the two different types, although presumably Michel does. Unfortunately, I do not have a Michel catalogue for Switzerland.

As if two types and two gum varieties were not confusing enough, Scott mentions a second type of 20c stamp from the series, but that refers to a different design, #243 in red and #319 in orange brown.

If someone could describe or show visually the difference between the two types of #232, I would be most grateful.

See arrows

Here are the two papers:

The ribbed paper can easily be identified.

Thank you so much for the excellent visual. The subtle, but distinct differences are not something I would have identified.

NSK/DRK, that was a really helpful post. Nice of you to do that.

Sorry if this is all basic info but I have spent quite a bit of time trying to distinguish between grilled and smooth gum and even on used stamps I've found you can often distinguish between them by holding the stamp just off the line between you and a light source.

The method of grilling the gum often left marks in the paper and you can pick them out.

It's certainly less brow furrowing for me than trying to spot the difference between the two cross in oval control marks!