Yes it looks like a 2B to me. I've got more detailed attributes to check than are written up in my identification tool. That was an experiment and I haven't yet been back to create the second generation tool based on user feedback. I would be interested in any suggestions you might have to offer about using it.
Pricing information is linked in my key for identifying stamps but I'm not sure if you spotted the link:
http://black.net.nz/old-k/old-k-prices.html#13
Expected price then (Dec 2017) was based 7 sales of 13" hat pairs (all Turkish K eras), and the median price is $450, with half selling for between $400 and $600. Since then I've recorded two more sales. They don't change the picture much. Here are the six Old Stamp pairs in more detail:
[img]http://black.net.nz/old-k/pricing/13-old-k-sales.png[/img]
The lowest price is a mixed Old Stamp / Turkish K Constantinople pair and no weights were given. I haven't done an overall comparison of prices for pairs with the same stamp versus two different stamps, but I suspect that the price is lower for "mixed pairs" because people don't believe these are factory pairs. The other factor is that many Turkish K Constantinople cymbals are fairly heavy which seems to keep their price down, particularly in smaller diameters. If you have a pair of 18" Turkish K Constantinople that's another thing altogether!
The next two are in the weight range of yours. The most expensive pair ($695) was an auction which was cancelled so that figure is unreliable. This is what -3 in the bids field means. The seller could have sold off eBay for less, or accepted a lower offer. eBay no longer provides sales data for best offers. I filter out any questionable data points like this once I've got enough data, but when sample size is relatively low, I still show them. But the best quality evidence comes from the sales with higher numbers of bids.
As far as how this applies to your pair, they look to be in excellent condition with "signatures" under the bell. I'd put the price estimate in the upper quartile of the price distribution. So I'd estimate that they might sell at $500 - $600 but would be unlikely to sell if you started them off above $600. But never say never. Prices are highly variable and what you get is what you get on the day.
I see you are in Canada and that may affect the expected price as well. Higher shipping costs (and fees for doing import paperwork which shipping companies charge) might make potential buyers in the US less inclined to pay top dollar. Cross border sales (and international price comparisons) are a another complex issue.
