That is a great find, Steve. Gorgeous hat.Mayser "Grand Prix" "R", 58 cm, 154 grams, possibly late 1920s early 1930s. Made by Mayser Ulm for the Swiss market "Chapellerie Krämer Basel". Mayser Ulm Stiff Felts are difficult to find and this one is in excellent condition. I have five Mayser Ulm Stiff Felts and they all have the same width Bands and similar length Bows.
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The Initials were removed.
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The exterior size label is still present.
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"M U" Mayser Ulm Paper Label, "Chapellerie Krämer Basel 2550" Paper Label
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"Albert Krämer Spalenberg 41. Basel" Annuario del commercio italo-svizzero / Yearbook of Italian-Swiss Trade, Published 1934
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