Here is a rare CD 328.2 Pyrex 553 insulator. This is the EIN [030] from the current price guide with just the letter 'B' on the skirt. A sort of straw color? The price guide lists a yellow tint. Anyway, I'd call is more towards a straw. I have not attempted to clean it. Some rubbing around the groove under the ears, 1 inch or so long rub to the top surface of the umbrella, ping under the 'P' in PYREX, ping under the 'T' of PAT, few tiny nicks to the edge of the umbrella. Neat straw lines around the skirt. Price guide says $700-$800. I am asking $500 (1/3 off the middle range of the price guide values). Free delivery to the Shrewsbury show on March 12 or the Pole Cat show on April 3. Shipping? I am not sure I am comfortable doing that, but we can talk. I accept payment plans, trades, partial trades - we can discuss. Thanks for looking.